In 1967, after winning the 24 Hours of Le Mans together with A.J. Foyt, he spontaneously sprayed champagne while celebrating on the podium. Apart from starting this tradition, he also was the first to put a simple right-angle extension on the upper trailing edge of the rear wing. This device, called a Gurney flap, increases downforce and, if well designed, imposes only a relatively small increase in aerodynamic drag. 