 Complete the following phrase:  After 1951 the car only appeared as an Formula 2 car as the Formula One World Championship adopted Formula Two regulations for the 1952 and 1953 seasons. For the 1952 season Rudi Fischer bought a Ferrari 500 which he used at all the races he entered. The 212 F1 was now used as a secondary entry. Peter Hirt drove the car at the Swiss Grand Prix. Fischer shared the 212 F1 with Hirt at the 