Later in his career he went on to compete in Formula One and other classes of car racing, becoming one of the few men to compete at Grand Prix level in both motorcycle and car racing.
Máis tarde, na súa carreira, competiu na Fórmula Un e noutras clases de carreiras de automóbiles, converténdose nun dos poucos en competir ao nivel de Grand Prix en motos e carreiras de automóbiles.