Which British motor-racer was the first person to win both the Formula One and Grand Prix Motorcycle World Championships?
1960 British Grand Prix 1960 British Grand Prix The 1960 British Grand Prix was a Formula One motor race held at the Silverstone Circuit, Northamptonshire, England, on 16 July 1960. It was race 7 of 10 in the 1960 World Championship of Drivers and race 6 of 9 in the 1960 International Cup for Formula One Manufacturers. The race was won by reigning World Champion Jack Brabham and Innes Ireland finished in third place. Between the two, multiple motorcycle Grand Prix World Champion John Surtees (in only his second ever Formula One Grand Prix) took second place. <nowiki>*</nowiki> Lance Reventlow and Chuck Daigh were
1979 Venezuelan motorcycle Grand Prix 125cc class from Frenchman Thierry Espié and Italian Maurizio Massimiani. Nieto would later win the 125cc season championship. Yamaha won two races, and Suzuki and Minarelli one each. 1979 Venezuelan motorcycle Grand Prix The 1979 Venezuelan motorcycle Grand Prix, the first of 13 rounds of the F.I.M. 1979 Grand Prix motorcycle racing season, was held on 18 March at the San Carlos Circuit. British rider Barry Sheene, world champion in 1976 and 1977, won the 500cc GP by 18 seconds from Italian Virginio Ferrari to make it three successive Venezuelan GPs. Venezuelan racer Carlos Lavado won the 350cc class from