Speeds on the straight by Group C prototypes reached over during the late 1980s. At the beginning of the 1988 24 Hours of Le Mans race, Paris garage owner Roger Dorchy drove for Welter Racing in a car dubbed the WM P88. The P88 belonged to a program known as "Project 400" and was powered by a 2.8-litre turbocharged Peugeot PRV V6 engine, which sacrificed reliability for power. As a result, the car was out after just 53 laps (or approximately 4 hours) with turbo, cooling and electrical failures. It was measured by radar travelling at an all-time race record speed of .