He won the 1978 South African Grand Prix, with a last-lap victory over Patrick Depailler, as well as the Austrian Grand Prix, in the innovative 'ground effect' Lotus 79.
Gañou o Gran Premio de Suráfrica de 1978, cunha vitoria na última volta sobre Patrick Depailler, así como o Gran Premio de Austria, co innovador "efecto solo" do Lotus 79.