The 1938 race saw René Dreyfus' Delahaye sensationally beating the Mercedes-Benz team. In 1939 Mercedes wasn't to be taken by surprise, Hermann Lang leading the team to a double victory. After World War II Pau continued as a non-championship Formula One race until 1963. Thereafter the race was run to Formula Two rules until 1985, and thereafter by its replacement, Formula 3000. In 1999, the event again changed, with Formula Three cars racing. Finally, in 2007, the race became a round of the World Touring Car Championship.