24 Hours of Le Mans
Udo Schütz / Piet de Klerk, Porsche System Engineering, Porsche 906/6 Carrera 6 Langheck, leads Hans Herrmann / Herbert Linge, Porsche System Engineering, Porsche 906/6 Carrera 6 Langheck, and Günther Klass / Rolf Stommelen, Porsche System Engineering, Porsche 906/6 Carrera 6.