The 1902 Paris – Vienna race was held on 26 – 28 June 1902 and laid out over a distance of about 990 kilometers. It was combined with the then still not-so-popular Gordon-Bennet Cup race. As racing was not allowed in Switzerland, the sections there were neutralised. The heaviest part though, was the 1700 meter high Austrian Vorarlberg pass, just after Bregenz. It was considered to be unbeatable by cars in those days. When the leader René de Knyff on Panhard, laying wide in front, broke his differential, just on that very pass, victory was handed to Marcel Renault, who then finished in Vienna with his only 30 hp Renault after just less than 16 hours.