Episode 564: Special Guests Franz and Lars Discuss Model S and X's Legacy

The Tesla Model S is a full-size electric sedan that helped establish Tesla’s reputation for long-range, high-performance EVs. In the podcast context, it’s being discussed as part of the Model S and Model X “legacy and history,” especially since the episode notes they are officially retired. That makes it a key reference point for how Tesla’s early flagship EVs shaped the market.

The Tesla Model X is a battery-electric SUV known for its premium features and distinctive rear door design. The podcast context places it alongside the Model S in a “legacy and history” discussion, noting both are officially retired. That makes it a key part of Tesla’s flagship SUV story and how Tesla evolved from early EVs to mainstream adoption.

A “signature series edition” is a limited, special-configuration version of a model—typically used to mark a milestone or, in this case, the end of production. The key idea is that it’s not the standard trim; it’s a curated final run with distinctive branding and delivery timing.

“Retirement” here means Tesla is ending production/sales of the SNX model. That matters because it changes the available lineup and can shift how enthusiasts compare ownership demographics over time.

The Tesla Model Y is Tesla’s compact crossover that became the brand’s best-seller. In this segment, it’s used as a benchmark for popularity (“top selling car on the planet”).

The Tesla Model 3 is Tesla’s mainstream electric sedan, positioned as the brand’s “everyday” EV. Here it’s mentioned as part of a listener ownership poll alongside the Model S and Model X.

In this context, “service” refers to maintenance and repairs handled through the EV manufacturer’s service process rather than routine DIY work. The hosts emphasize that the ownership experience depends on how the car is handled when it needs service.

An extended warranty plan is coverage that goes beyond the factory warranty period, typically covering repairs for specified components and time/mileage limits. In EV ownership, it’s often marketed to reduce the cost risk of unexpected repairs.

“Sunset” in an automotive context means the manufacturer plans to stop selling and/or producing a model. Here, the hosts are asking about the internal decision process behind retiring the Model S/X line.

Euro NCAP is Europe’s vehicle safety testing program, and it periodically updates its test “protocols” to reflect new safety expectations. As the hosts say, those protocols become more stringent over time, which can force automakers to redesign or refresh vehicles to keep earning top crash-safety ratings.

“Five-star” refers to Euro NCAP’s top rating for crash safety performance. The hosts connect it to vehicle “refreshes,” implying that changes made a few years earlier were important to meet the then-current test requirements.

IHS refers to a safety-testing and analytics organization that has been involved in vehicle safety evaluation frameworks. In this context, it’s being grouped with Euro NCAP as a source of newer, more demanding crash-test scenarios that the platform wasn’t originally built for.

“Structural updates” are changes to a car’s body structure—like the frame, crumple zones, pillars, and mounting points—so it can better manage crash forces. In crash safety discussions, these updates are often required when new test types (like small overlap) reveal weaknesses in the original design.

“Offset” crash tests simulate impacts where the vehicle hits the barrier at an angle or with the front not centered. That changes which parts of the front structure and restraints are loaded, so the car’s crash structure has to manage uneven forces.

“Small overlap” is a crash test scenario where only a small portion of the front of the car hits an object. Because the impact is concentrated, it can stress the structure differently than a full-width crash, so the vehicle may need specific structural reinforcement to stay safe.

A “massive overhaul” here describes a major redesign effort rather than a minor tweak. In vehicle safety terms, it usually implies reworking the underlying platform and manufacturing approach to meet stricter crash-test requirements.

In this context, “autonomous” means the car driving itself using sensors, software, and control systems rather than relying on the driver for every maneuver. Tesla’s autonomy roadmap has been a major part of how the company planned product timing and hardware readiness.

A “mini refresh” is a mid-cycle update to a car that typically changes styling details, software, and/or minor hardware without replacing the whole model. Tesla often rolls these updates gradually, so the car can evolve while production is ongoing.

“France blue” appears to be a specific paint color name being introduced for the refreshed Tesla. Colorways are part of how manufacturers keep a model feeling current without major mechanical changes.

This refers to ending production at a specific manufacturing line. The key idea is that even while production was winding down, the team still made ongoing changes to improve the cars.

“48 volt” refers to a higher-voltage electrical system used to power accessories and reduce the load on the traditional 12-volt system. In EVs, moving to 48V can improve efficiency and enable more powerful electronics without running heavy high-current wiring for everything.

A “total redesign” means reworking the vehicle’s core architecture and systems rather than making incremental updates. In EV terms, that can involve changing major components and integration points (like electrical architecture, packaging, and control systems), which is a big shift compared with ongoing platform evolution.

“Vehicles per square foot” is a manufacturing productivity metric that measures how many finished vehicles can be produced relative to the factory floor area. It’s used here to compare output efficiency between the Model S/X line and another production approach (“Cybercap”).

Cybercap appears to be a Tesla internal production/engineering approach being compared against the existing Model S/X line. The hosts frame it as a technology that improves manufacturing efficiency and output density, and they discuss shifting people to work on it.

A render is a computer-generated visualization of a car’s design and color. In automotive marketing, renders can’t perfectly match how a paint finish reflects light in real-world conditions.

The hosts are talking about recreating a prior “Signature Series” paint/color scheme, but with updated manufacturing and paint knowledge. This is essentially a legacy-color refresh: keep the recognizable look while improving the final finish.

Ultra Red and Multicore Red are named paint variants being compared for finish quality. The discussion suggests Ultra Red’s formulation/finish produces a nicer look than the older Multicore Red.

Multicore Red is an earlier named red paint variant used as a comparison point. The hosts imply that newer paint processes and materials can improve the visual result versus older color formulations.

“Body matched” means the door handles are finished in the same paint color as the surrounding body panels, rather than using a contrasting black or chrome finish. This is a common visual customization goal because it makes the exterior look more integrated and less “stuck-on.”

Spot matching to the paint refers to refinishing a small area so the new paint blends with the existing factory color. It’s a technique used to avoid repainting the entire panel, but it requires careful color matching and blending to minimize visible differences.

A “final signature series” is a limited-edition production run meant to mark the end of a particular model configuration or era. The hosts are using it to explain how Tesla chose a specific quantity split between Model S and Model X based on expected buyer interest.

“Plaid powertrain” refers to Tesla’s Plaid-level drivetrain hardware/software package used in the high-performance versions of the Model S and Model X. It’s the part of the car that determines how much power the motors can deliver and how quickly the car can accelerate.

The “350 total cars” phrasing indicates a limited production or allocation count for a specific variant or time window. In this context, they’re using that number to discuss demand and who ends up buying the cars.

Over-the-air (OTA) updates are software updates delivered wirelessly to a car, without needing a dealer visit or a manual install. The key idea in this segment is that Tesla’s OTA updates can improve the car after purchase, so the vehicle isn’t limited to the software version it shipped with.

Rear-wheel drive (RWD) means the car’s power is sent to the rear wheels instead of all four wheels. For EVs like the Tesla Model S mentioned here, drivetrain layout can affect traction feel, efficiency, and how the car behaves in different conditions.

The Ford Falcon is a model line known for practical family-oriented use, and the podcast context focuses on door design and how it affects access with kids and car seats. That kind of detail matters because real-world usability—like getting children in and out safely—can be a deciding factor. It’s being discussed for the day-to-day experience rather than performance.

“Falcon doors” refers to the Model X’s upward-opening door design (often called Falcon Wing doors). The point is packaging and access: the doors swing up to give more clearance when loading passengers, which can be especially helpful with child seats.

The DeLorean DMC-12 is a distinctive sports car best known for its iconic styling and its place in pop culture. In the podcast context, the host mentions being a Delorean owner as a personal dream-car story. That makes it relevant as a “history and legacy” type reference, even though it’s not an EV-focused vehicle.

The Mercedes-Benz SLS AMG is a performance-focused supercar that’s known for its limited production and enthusiast appeal. In the podcast context, it’s referenced with a production-number detail (“only like 2000”), which underscores its rarity. That makes it a natural topic when discussing iconic cars and how scarcity can shape their legacy.

A battery shell is the structural enclosure that houses an EV’s battery pack. Even when the pack isn’t installed, a shell can be used for fitment, display, or engineering mockups.

Spare parts are components kept on hand to replace missing or incomplete items during production, assembly, or display builds. Here, they’re used to assemble showroom displays when full cars weren’t available.

“Startup mentality” refers to the culture of moving fast with limited resources—often improvising to keep progress going. In this segment, it’s tied to scrounging parts and building engineering/showroom displays despite not having finished cars.

Acceleration describes how quickly a vehicle’s speed increases over time. In EV discussions, it’s often highlighted because instant torque can make the car feel like it “jumps” forward when you press the pedal.

Newton-meters (N·m) are a unit of torque, which is the twisting force an electric motor delivers. A figure like “400 Newton meters” is used to communicate how strongly the vehicle can accelerate, especially from low speeds.

Newton-meters (N·m) measure torque, which is the twisting force that the motor applies to the drivetrain. In this segment, Lars is asked what would happen if they pushed 600 N·m through the motor, and he predicts the drivetrain would fail.

Half shafts (axle shafts) transmit torque from the drivetrain to the wheels. Lars says the increased torque would likely break the half shafts, and later they confirm it by breaking the splines off the half shafts.

Splines are the ridged, interlocking surfaces on shafts and mating parts that transmit torque while allowing assembly alignment. The failure described here is that the splines on the half shafts broke off after the team pushed higher torque.

An inverter is the power electronics component that converts the battery’s DC electricity into AC power for the electric motor. Lars notes they could “eke more out” of the inverter in the drive unit, meaning they increased how much usable torque the system could deliver.

NTN is a supplier involved in manufacturing drivetrain components, and here it’s the company Lars had to work with to change the half-shaft spline design. The discussion highlights how quickly a supplier had to validate a revised part for production cars.

A “power upgrade over the air” is a software update that changes how the electric drivetrain delivers power. On an EV, that can mean adjusting motor control settings so the car accelerates more strongly without a physical parts swap.

The motor shaft is the rotating output of the electric motor that transfers mechanical motion into the drivetrain. When tuning performance, engineers consider what happens from the motor’s output through to the wheels.

A production line is the factory workflow where vehicles (or vehicle components) move through a sequence of stations to be assembled and finished. This segment emphasizes that the early Model S and Model X ramp-up involved troubleshooting problems directly on the line.

“Fabergé” is used here as a nickname/metaphor for a highly curated, exceptionally finished Tesla prototype or early build—implying it’s treated like a jewel rather than a typical production car. The speaker says the car they’re sitting in is “famously the Fabergé,” tying it to the early production/quality story.

“Quality issues” in a car context usually means manufacturing defects or inconsistencies that show up in the finished vehicle. Here, the speaker connects those issues to production-line work, including how the cars look and how well they’re built.

This refers to Elon Musk, who is described here as directly intervening in production and quality efforts. The speaker says Musk pulled him in to address quality and what the cars were “supposed to look like,” highlighting how leadership can influence manufacturing outcomes.

Paint quality refers to how well the vehicle’s exterior coating is applied and finishes—things like surface smoothness, coverage, and how consistently the color and gloss come out. The speaker lists paint quality alongside other production-line problems they worked to improve.

The drive unit is the EV’s integrated propulsion hardware—typically the electric motor plus its reduction gearing and inverter/control interfaces. It’s the “engine” of an EV, responsible for turning electrical power into wheel torque.

A test track is a controlled driving environment used to evaluate vehicle behavior under repeatable conditions. In this segment, they contrast general test rides with moments “on the test track,” where performance and traction behavior can be observed more clearly at speed.

Wheelspin is when the drive wheels lose traction and spin faster than the car is actually moving. On EVs like the Tesla Model S and Model X, it often happens during hard acceleration because electric motors can deliver torque instantly, so traction control and firmware tuning become critical.

Firmware is the low-level software stored in a vehicle’s electronic control units that directly governs how systems behave. Here, they’re describing late-night debugging to get the firmware right, which affects how the car manages power delivery and traction behavior (including wheelspin).

In this context, “lugs” likely refers to wheel hardware (lug nuts/bolts) or wheel-end connections that can be swapped to correct a wiring or sensor/control mapping issue. They describe switching the lugs as a “hardware solution” to a firmware problem, implying the car’s wheel/drive-side inputs needed to match the software’s expectations.

FSD stands for Full Self-Driving, Tesla’s software package aimed at automating more driving tasks. In practice, it’s designed to handle things like lane driving and navigation in certain conditions, but it still depends on driver supervision and the specific environment.

This refers to Motor Trend’s annual “Car of the Year” recognition, which is a mainstream automotive award. The hosts mention it to highlight the Model S’s impact and credibility with traditional media.

Lithium-ion batteries are the rechargeable battery chemistry used in most modern EVs. They store electrical energy efficiently and can be engineered for high power output and long driving range.

In modern EVs, a touchscreen often acts as the primary control interface for driving functions, media, and vehicle settings. Tesla’s early use of a large, central touchscreen helped set expectations for how drivers interact with cars.

“Over the year updates” refers to Tesla’s practice of improving the car over time via software changes rather than waiting for a new model year. It’s closely associated with the idea of continuous improvement, where features and behavior can evolve after purchase.

Driver profiles are saved settings that let different people personalize the car—things like seat position, steering feel, and infotainment preferences. In Tesla’s ecosystem, this is part of the broader shift toward software-driven personalization.

In EV context, “efficiency” usually means how effectively the car converts stored electrical energy into motion. Higher efficiency typically translates to more range for the same battery capacity.

“EV tire lines” are tire models designed specifically for electric vehicles, often tuned for lower rolling resistance to help maximize range. They may also be engineered for the torque characteristics and heavier weight typical of EVs.

The supercharger network is Tesla’s fast-charging infrastructure for EVs. It matters because reliable, widely available fast charging reduces “range anxiety” and makes long trips practical.

The “Reno factory” refers to Tesla’s battery manufacturing efforts in the Reno, Nevada area. It’s used here as an example of real-world production scaling that helped make lithium-ion batteries more affordable.

Gigafactory one is Tesla’s first major large-scale battery manufacturing site (often associated with Nevada). The hosts highlight how it dramatically increased lithium-ion battery output, helping EVs become more cost-competitive.

Global EV adoption refers to how quickly electric vehicles are being adopted worldwide, usually measured as the share of new vehicle sales or the share of vehicles on the road. The hosts discuss the growth from the early “point zero something” era to around “17 to 18 percent,” framing it as a major shift in mainstream transportation.

A dual-motor setup uses two electric motors to drive the wheels, often enabling all-wheel drive. Compared with a single-motor EV, it can improve traction and allow more flexible torque distribution between axles.

“Ludicrous” is Tesla’s performance software/hardware mode for certain Model S/X variants, designed to deliver maximum acceleration. In this segment it’s mentioned right after the P85D, tying the name to the idea of pushing more power through the drivetrain.

“Structural bits and integrity” refers to the car’s chassis/body structure and how well it maintains strength and crashworthiness. In this segment, it’s central to the engineering trade-off: adding AWD hardware and changing battery packaging can require structural openings or rerouting parts, which must still meet safety goals.

All-wheel drive (AWD) sends power to more than one axle, improving traction and handling in low-grip conditions. Here, the hosts describe a structural packaging constraint: AWD requires a “hole”/path for a half-shaft through the frame, which forces trade-offs with other design goals.

A “tower of cells” describes how Tesla arranged battery cells into a stacked module structure within the vehicle. The segment explains a packaging plan: early on, they expected to use a specific underbody space for that battery stack, but later efficiency improvements changed the needed layout.

In automotive systems, redundancy means having backup capability so the vehicle can keep operating if one component fails. Here, the hosts describe a multi-motor setup where if one motor fails, the car can still keep driving rather than becoming stranded.

The Nürburgring is a famous German race circuit (often referred to as “the Ring”) used as a benchmark for lap times and vehicle performance. Mentioning a Nürburgring time signals that the comparison is about real-world track pace, not just marketing numbers.

The Porsche Taycan is an all-electric performance sedan built for fast driving and high-end engineering. In the podcast context, it’s referenced in relation to Nürburgring performance and a specific Taycan variant (Turbo S), tying it to track credibility. That’s why it comes up in an EV podcast—because it represents how serious performance EVs can be.

Carbon-ceramic brakes use ceramic brake discs (often reinforced with carbon fiber in the composite) designed to handle very high temperatures. They’re typically chosen for performance driving because they can resist fade better than conventional brake setups.

The “Corvette kit” reference points to using brake components associated with the Chevrolet Corvette ecosystem. In this context, it’s about sourcing carbon-ceramic brake hardware for Tesla’s early Plaid testing.

The Chevrolet Corvette is a performance sports car known for its strong power and track-ready heritage. In the podcast context, it’s mentioned alongside “carbon ceramics,” implying a discussion about braking hardware and performance upgrades. That makes it relevant to conversations about how performance parts are used to improve stopping power and durability.

This describes brake thermal runaway: the brakes overheat to the point that materials can ignite. On high-performance EVs, this can happen if brake energy (from hard deceleration) exceeds what the brakes can dissipate as heat during the run.

A “braking stop” is a single, deliberate deceleration event—typically from a higher speed down to a stop. On a test track, repeated or extremely hard braking can overwhelm brake cooling and cause severe overheating.

“1865” refers to another cylindrical lithium-ion cell format (18mm x 65mm). In this discussion, it’s part of the evolution of Tesla’s battery technology, where different cell sizes and designs are used to balance energy density, performance, and manufacturability.

“Energy dense” refers to how much electrical energy a battery can store for a given size or weight. Higher energy density generally means more driving range without increasing the battery pack’s mass or volume.

“4680s” refers to Tesla’s larger cylindrical battery cells (46mm x 80mm). Tesla developed this cell format to improve energy capacity and manufacturing efficiency, which can translate into better range or performance potential at the pack level.

“720s” here appears to refer to a specific performance/track configuration or target metric used during Nürburgring testing. Without additional context in the excerpt, it’s not possible to confirm whether it’s a time, a vehicle variant, or another internal shorthand.

The McLaren 720S is a high-performance supercar designed for rapid acceleration and strong track capability. In the podcast context, it’s mentioned in relation to running on the Nürburgring and being driven hard, which highlights its performance reputation. That’s why it appears in a conversation about speed, endurance, and real-world driving demands.

“Making trades” refers to engineering prioritization: choosing which performance or development goals to optimize when resources and timelines are limited. In this segment, the trade is between battery-pack development for one vehicle versus redirecting that work to another.

“2170s” are cylindrical lithium-ion cells in a newer size format (about 21 mm diameter and 70 mm long). The segment explains that Tesla converted inventory from 18650 cells to 2170 cells, and that the larger cell format is easier to manufacture with newer processes.

Wire bonding is a manufacturing technique used to connect battery components electrically, typically by attaching fine wires to current-collector structures. In this segment, it’s contrasted with laser welding, implying that smaller cells (like 18650) require more complex or harder-to-scale steps.