Who is the Italian teammate of the four-time 500cc motorcycle World Champion who won the title in 1956, 1958, 1959, and 1960
John Surtees John Surtees, {'1': ", '2': ", '3': ", '4': "} (11 February 1934 – 10 March 2017) was an English Grand Prix motorcycle road racer and Formula One driver. He was a four-time 500cc motorcycle World Champion – winning that title in 1956, 1958, 1959 and 1960 – the Formula One World Champion in 1964, and remains the only person to have won World Championships on both two and four wheels. He founded the Surtees Racing Organisation team that competed as a constructor in Formula One, Formula 2 and Formula 5000 from 1970 to 1978. He was also the ambassador of the Racing Steps Foundation.
Duilio Agostini Duilio Agostini (8 April 1926 – 12 April 2008) was an Italian Grand Prix motorcycle road racer. He had his best year in 1955 when he won the 350cc French Grand Prix and finished the season in seventh place in the 350cc world championship.