Jo Siffert
Jo Siffert and Pedro Rodríguez, who had an intense rivalry driving for John Wyer's Gulf-sponsored works Porsche endurance sportscar team, both lost their lives racing in 1971. Rodriguez died driving a Ferrari 512 sports car at an Interserie race at the Norisring, Germany, in July, while Siffert died in a fiery crash at the World Championship Victory Race non-championship Formula One event at Brands Hatch, in October.