BONUS: Autocar Meets Andy Green and JCB's Lord Bamford
My week in cars: the Autocar podcast
My week in cars: the Autocar podcast May 15, 2026
 BONUS: Autocar Meets Andy Green and JCB's Lord Bamford

BONUS: Autocar Meets Andy Green and JCB's Lord Bamford

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 BONUS: Autocar Meets Andy Green and JCB's Lord Bamford
Dodge Challenger
Car

Dodge Challenger

The Dodge Challenger is a sports car built for strong acceleration and high-speed driving. It’s often talked about because it’s designed to be a “performance challenger,” meaning it’s meant to go fast and feel exciting to drive. That makes it a natural fit when a podcast discusses speed and record attempts.

Jeep Commander
Car

Jeep Commander

The Jeep Commander is a mid-size SUV, which means it’s built to fit more passengers and handle everyday driving. It’s designed to be practical, with space for people and luggage. It may be mentioned in the episode because the word “Commander” is used in the introduction.

Concept

land speed record

A land speed record is about setting the fastest speed a vehicle can achieve on land. Bonneville is a well-known place where people try these records.

Term

twin-engine

“Twin-engine” means the vehicle has two engines working together. Using two engines can help provide more total power for record-speed runs.

Concept

hydrogen-powered

In this context, “hydrogen-powered” means the vehicle uses hydrogen fuel to make power. The idea is that when it burns hydrogen, it can produce water instead of typical exhaust gases.

Car

JCB HydroMax

JCB HydroMax is a special vehicle made to try for a land-speed record. Instead of gasoline or diesel, it uses hydrogen, and the exhaust is mainly water.

JCB diesel max
Car

JCB diesel max

The JCB Dieselmax is an earlier JCB record car that used diesel engines. It’s referenced here because it previously held the record for a very fast diesel-powered run.

Term

turbos

“Turbos” are turbochargers. They use the engine’s exhaust to push extra air into the engine so it can make more power.

Concept

internal combustion

Internal combustion means the engine makes power by burning fuel inside it. The hosts are saying hydrogen could be used with this kind of engine instead of diesel.

Concept

biofuels

Biofuels are fuels made from living or recently living material, not just fossil fuels. The speaker mentions them as a temporary solution for equipment that can’t easily use electricity.

Concept

zero emissions solution

“Zero emissions” means the vehicle is claimed to produce no polluting exhaust while running. In this case, the speaker says the exhaust comes out as water when using hydrogen.

Concept

hydrogen fuel

Hydrogen fuel is a fuel that can produce zero tailpipe emissions. Using it in a fast race car is tricky because the engine has to be tuned to burn hydrogen safely and efficiently.

Term

dyno

A dyno is a special test stand for an engine. It lets engineers measure how much power and torque the engine makes while they control the conditions.

Term

torque

Torque is the engine’s twisting force. More torque usually means the car can accelerate harder, which matters a lot when you’re trying to reach top speed on a limited distance.

Term

space frame

A space frame is a strong skeleton made from metal tubes. It helps the car stay stiff and stable when it’s being pushed very hard at high speed.

Term

drag

Drag is air resistance. The faster you go, the more the air pushes back, so reducing drag helps the car go faster.

Concept

world record land-speed attempt

A land-speed record attempt is a straight-line speed challenge on a special track. The car has to accelerate and slow down within a fixed distance, and track conditions can make it harder to hit the target speed.

Concept

salt track

A salt track is the salt flat surface used for top-speed runs. If the salt is rougher or dustier, it can make the car harder to control and can increase drag, so it affects the record attempt.

Term

power to weight

Power-to-weight means “how strong the car is for how heavy it is.” A lighter car with similar power can accelerate better than a heavier one.

Term

tire limiting speed

At very high speeds, the tires can become the limiting factor. Even if the engine can go faster, the tires may not be safe or stable enough to do it.

Term

cockpit layout

Cockpit layout is how the driver area is set up—where the seat and controls are, and what the driver can see. Better layout can help the driver stay comfortable and in control.

Term

engine test bed

An engine test bed is a place where they run the engine and measure how it behaves. It helps them check performance and problems before putting it into the car.

Term

hydrogen system

The hydrogen system is everything that handles the hydrogen—storing it and getting it to where it needs to go. It has to work safely and consistently for the car to perform.

Concept

salt operating environment

“Salt” here means the salt flats where they try to set speed records. The surface and the harsh conditions can affect grip and even how parts wear out.

Concept

fixed track length acceleration planning

On a fixed-length track, you can’t just “go as fast as possible whenever.” You have to accelerate enough early to reach the target speed before the run ends.

Term

failure modes

“Failure modes” means the different ways something can break. In this case, tires can fail in different ways depending on how they’re loaded and how fast they’re spun.

Term

NASA spin rigs

A “spin rig” is a specialized test machine that spins a tire or component at controlled speeds to reproduce real-world stresses. Here, the hosts say the rig was built for the Space Shuttle program, then used to spin tires until they fail to identify failure modes and safe operating speeds.

Term

jet fighter engines

Jet fighter engines are the kinds of engines used in military jets. They produce huge thrust, which is useful when you’re trying to push a vehicle to record-breaking speeds.

Term

supersonic

Supersonic means going faster than sound. When you do that, the air behaves very differently, which makes high-speed control and design much harder.

Term

W12

W12 means the engine has 12 cylinders arranged in a special shape. The point is usually to fit a lot of cylinders into a compact engine so it can make strong power smoothly.

Concept

world's largest straight line speed meet

This is a speed event where the goal is to go as fast as possible in a straight line. Instead of turning corners like on a track, teams focus on getting maximum speed safely over a long distance.

Brand

Bugatti

Bugatti is a famous car brand that builds very high-performance cars. In this conversation, it’s mentioned as a company that didn’t take on this specific hydrogen land-speed challenge.

Concept

SCTA

SCTA is an organization that oversees land-speed record attempts. They make the rules and help ensure the runs are measured and judged consistently.

Term

Bonneville regulators

This means the officials who run the rules for record attempts at Bonneville. If you want your speed to count, you have to follow their requirements and measurement procedures.

Term

FIA record process

FIA is the big international motorsport organization. Saying “FIA record process” means the speed attempt has to be done with official checks so it can be officially recognized.

Company

Porsche and Performance Centre

Porsche has a training/performance facility where people get pushed and evaluated. The idea is that Porsche can study how the vehicle and driver behave under demanding conditions.

Concept

Bonneville in August

They’re planning the record attempt for August at Bonneville. Timing matters because the weather and track conditions can change how well the car can run.

Concept

fuel-cell vehicle

It’s a car that makes electricity from hydrogen using a fuel cell. That electricity is then used to move the car, rather than relying purely on a conventional engine.

Concept

hydrogen piston engine

This is an engine that uses hydrogen as the fuel, but it still uses pistons like a traditional engine. The big difference is the fuel is hydrogen instead of gasoline or diesel.

Concept

instant power for a few seconds

Construction equipment often needs a quick burst of strong power for a short moment—like when digging or lifting. Road driving usually doesn’t demand those same short, intense bursts all the time.

Concept

backhoe loader

A backhoe loader is a construction machine that can scoop with the front and dig with the back. It’s built for heavy work, so it needs strong power when you’re lifting and digging.

Concept

wheel loading shovel

A wheel loader is a big construction machine with a front bucket used for moving dirt or rocks. It needs strong, quick power to load material efficiently.

Concept

Bonneville speed record runs (average of two runs)

Bonneville Salt Flats are famous for trying to set top-speed records. Instead of trusting one run, record attempts often average two runs so conditions are fairer.

Term

hydrogen leakage

Hydrogen can escape more easily than many other fuels, so preventing leaks is a big safety and design issue. That’s why the system has to be engineered to stop hydrogen from getting out.

Concept

site filling system

Instead of taking equipment to a fueling station, the hydrogen can be filled right at the job site. That helps keep machines working with less waiting around.

Term

bowser

A “bowser” is a fuel tanker used to deliver fuel to a location—commonly seen on construction sites, farms, or remote works. In the transcript, it’s used as the practical way construction machinery gets refueled before hydrogen delivery becomes common.

Term

hydrogen machines

These are machines that run on hydrogen instead of diesel or gasoline. The key difference is how they get energy from hydrogen and how they’re refueled at the job site.

Term

piston engines

Piston engines are the classic kind of engine where parts move inside cylinders to make power. The discussion here is about how long we’ve been making them and how well we understand them.

Concept

fuel-cell sensitivity to dirt and dust

They’re pointing out that fuel cells may not like the dirty, dusty conditions you get on construction sites. The idea is that the environment can make the system harder to keep working reliably.

Concept

fuel-cell sensitivity to temperature differences

They’re saying fuel cells can be affected by temperature changes. Since job sites aren’t climate-controlled, that can be a challenge for hydrogen systems.

Term

hydro maxi

“Hydro maxi” is a project name for a hydrogen-powered machine. The idea is to take a digger-style engine setup and run it on hydrogen instead.

Company

Ricardo

Ricardo is an engineering company that helped with the project. In this conversation, they’re part of the team doing advanced technical development.

Company

Prodrive

Prodrive is a company known for motorsport and performance engineering. Here, they’re described as having a hands-on role in the project.

Brand

Goodyear

Goodyear is a tire brand. The speaker is saying the project used Goodyear tires, which matters a lot for grip and control.

Company

Bosch

Bosch is a major automotive technology company. The speaker is saying Bosch also helped with parts of the project.

Term

X-Track

“X-Track” is mentioned in the context of a gearbox, suggesting a specific gearbox model or transmission-related component. The speaker implies the gearing and gearbox selection are complex and tightly integrated with the overall powertrain.

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