 Complete the following phrase:  Prost signed to join Ferrari in 1990, becoming the first driver signed to the team after the death of team founder Enzo Ferrari in 1988. He replaced Gerhard Berger at Ferrari and was partnered with Britains Nigel Mansell for Berger took Prosts seat at McLaren. As reigning world champion, Prost took over as the teams lead driver and was said to have played on this status. Mansell recalls one incident where at the 1990 British Grand Prix, the car he drove didnt handle the same as in the previous race where he had taken pole position, and later found out from team mechanics that Prost saw Mansell as having a superior car and had them swapped without Mansell knowing. Prost won five races for Ferrari that year, in Brazil, Mexico, France, 