Not too long ago, Car Throttle was on the tarmac at a windy RAF base in Lincolnshire to find out about the JCB Hydromax, a car built with the express purpose of setting a new hydrogen-fuelled land speed record.
Fast forward a couple of months, and that very same car has achieved a two-way average speed of 406.320mph at the Bonneville Salt Flats in Utah with Wing Commander Andy Green at the controls, officially breaking the record it was designed to beat, and raising a new bar for alternative-fuelled speed records in the process.
A purpose-built streamliner based on the design of the Dieselmax with which JCB set the diesel land speed record 20…
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