The JCB Dieselmax is a diesel-engined 'Streamliner' car designed for the purpose of breaking the land speed record for a diesel-engined vehicle. The chassis was designed and built by Coventry-based engineering company Visioneering, with engine development by Sussex-based Ricardo UK Ltd. During the 2006 Bonneville Speed Week and subsequent FIA record runs, the car was driven by Wing Commander Andy Green, a serving RAF Officer who previously broke, and still holds, the absolute land speed record in the ThrustSSC.