 Complete the following phrase:  In all, Vettel has won 53 Grands Prix at 21 different circuits; the majority of his race victories 38 came with Red Bull; he has also won 14 races with Ferrari and 1 for Toro Rosso. His most successful circuit is the Marina Bay Street Circuit, the host track of the Singapore Grand Prix, where he has won 5 times, with 8 podium finishes in 12 races. Vettels largest margin of victory in his career was at the 