In the late 1950s the Porsche 718 RSK, a two-seater sports car, was entered in Formula Two races, as rules permitted this, and lap times were promising. The 718 was first modified by moving the seat into the center of the car, and subsequently proper open wheelers were built. These 1500 cc cars enjoyed some success. The former F2 cars were moved up to Formula One in 1961, where Porsche's outdated design was not competitive. For , a newly developed flat-eight powered and sleek Porsche 804 produced Porsche's only win as a constructor in a championship race, claimed by Dan Gurney at the 1962 French Grand Prix. One week later, he repeated the success in front of Porsche's home crowd on Stuttgart's Solitude in a non-championship race. At the end of the season, Porsche withdrew from F1 due to the high costs, just having acquired the Reutter factory. Volkswagen and German branches of suppliers had no interest in an F1 commitment as this series was too far away from road cars. Privateers continued to enter the out-dated Porsche 718 in F1 until 1964.