24 Hours of Le Mans: A fuel and driver change pitstop for the Helmut Marko / Gijs van Lennep, Martini International Racing Team, Porsche 917K entry. Jo Siffert, from the rival John Wyer Porsche team, looks on.
A fuel and driver change pitstop for the Helmut Marko / Gijs van Lennep, Martini International Racing Team, Porsche 917K entry. Jo Siffert, from the rival John Wyer Porsche team, looks on.
