The world’s fastest diesel car is coming to the Design Museum. Developed by British construction and engineering company JCB and designed entirely by computer, the Dieselmax broke the diesel land speed record in August 2006 at the Bonneville Salt Flats USA, reaching a speed of 350.092 mph (563.418 kph). The nine metre long vehicle, powered by two specially designed JCB Dieselmax engines, normally found in JCB diggers, holds a unique place in record-breaking history.