24 Hours of Le Mans: Jo Siffert/ Hans Herrmann, Porsche System Engineering, Porsche 907/6, leads Mark Donohue / Bruce McLaren, Shelby-American, Ford GT40 Mk4.
Jo Siffert/ Hans Herrmann, Porsche System Engineering, Porsche 907/6, leads Mark Donohue / Bruce McLaren, Shelby-American, Ford GT40 Mk4.