A Class-Winning 356 SL Porsche at the 1951 LeMans Race

In 1951 a 356 SL with starting number 46 was the first Porsche to enter Le Mans—and it promptly drove to a class victory. This aerodynamically optimized Gmünd Coupé weighed just 640 kilograms, in contrast to today's 780, could hold sixty-eight liters of fuel rather than fifty, and was accelerated up to 160 kmh by a 1.1-liter four-cylinder engine with 46 hp instead of 40. The average lap time for a modern 911 RSR is around 70 kmh faster.