Karl Büsser

Karl Büsser is a retired Swiss sidecarcross passenger who won the Sidecarcross World Championship twice, in 1982 and 1983, as passenger of Emil Bollhalder. He made his national and international debut in 1974 on the side of Ernst Ruegg and stayed with him until the end of the 1980 season, finishing as high as fourth overall in 1977. In 1979 he raced a single Grand Prix with the German driver Reinhard Böhler, who became the first world champion in the sport the following year. After joining Bollhalder in 1981 he finished fourth in the world championship, then won the title in both 1982 and 1983, relegating the German team of Josef Brockhausen and Hubert Rebele to second place each time. He also won the Swiss national championship in 1982 and 1983, and retired from national and international competition at the end of the 1983 season.