Answer
John Surtees competed in two motorcycle classes: 500cc and 350cc. He won the 500cc championship in 1956, 1958, and 1959, and the 350cc championship in 1956 and 1958. He was the only person to win the 500cc and 350cc championships in the same year, doing so in 1959. Surtees is one of the most successful motorcycle racers of all time, with a total of 11 world championships.