Neil Hudson won what premier motocross championship in 1981?
Motocross World Championship FIM Motocross World Championship is the premier championship of motocross racing, organized by the Fédération Internationale de Motocyclisme (FIM), currently divided into two distinct classes: MX1 and MX2. Race duration is 30 minutes plus 2 laps per moto. The series runs 18 events with two motos at each round.
1985–86 USAC Championship Car season The 1985–86 USAC Gold Crown Championship season consisted of one race, the 70th Indianapolis 500 on May 31, 1986. The USAC National Champion and Indianapolis 500 winner was Bobby Rahal.