Sunday 24th April 1983
German driver Rolf Stommelen (39) who participated in 63 Formula One World Championship Grands Prix, achieving one podium, and scored a total of 14 championship points was killed in a vicious crash during an IMSA Camel GT event at Riverside International Raceway. He was running a John Fitzpatrick entered Porsche 935 with codriver Derek Bell. Rolf had just taken over the car from Derek Bell and was in second place when the Rearwing broke due to mechanical failure at 190 mph. The car became uncontrollable, slammed against a concrete wall, somersaulted and caught fire.