It's been far too long since I've been able to report a new land speed record. For a while, it looked like Bloodhound might have been able to make good on its 1,000 mph (1,609 km/h) attempt, but then the money ran out. As a result, Thrust SSC's two-way average of 763.6 mph (1,229 km/h), set in 1997, remains the fastest anyone has ever driven a wheeled vehicle over a timed mile. But yesterday, on the Bonneville Salt Flats in Utah, a new record was set by the JCB Hydromax for hydrogen-powered cars.

JCB is a UK-based manufacturer of heavy industrial and agricultural equipment—think diggers, loaders, backhoes, tractors, and so on. And as JCB is based in the UK, it doesn't have the luxury of being able to ignore carbon emissions targets; it has to have alternatives to diesel engines. For some products, that means switching to batteries, but the company has also been working with hydrogen. At first, that meant fuel cells, but after developing prototypes, JCB concluded the tech was too expensive and too fragile for life on the farm or the construction site. Instead, in 2020, the company started developing its own hydrogen combustion engine.

The idea of burning hydrogen in an internal…

Read…

C…