Evel Knievel 1972. On January 7 and 8, 1971, Knievel set the record by selling over 100,000 tickets to back-to-back performances at the Houston Astrodome. On February 28, he set a new world record by jumping 19 cars with his Harley-Davidson XR-750 at the Ontario Motor Speedway in Ontario, California. The 19-car jump was filmed for the movie "Evel Knievel." Knievel held the record for 27 years until Bubba Blackwell jumped 20 cars in 1998 with an XR-750. In 2015, Doug Danger surpassed that number with 22 cars, accomplishing this feat on Evel Knievel's actual vintage 1972 Harley-Davidson XR-750. On May 10,
1971 Grand Prix motorcycle racing season six races were counted on 50cc, 125cc, 350cc and 500cc championships, best of seven in 250cc, while in the Sidecars, the best of five races were counted. 1971 Grand Prix motorcycle racing season The 1971 Grand Prix motorcycle racing season was the 23rd F.I.M. Road Racing World Championship Grand Prix season. The season consisted of twelve Grand Prix races in six classes: 500cc, 350cc, 250cc, 125cc, 50cc and Sidecars 500cc. It began on 9 May, with Austrian Grand Prix and ended with Spanish Grand Prix on 26 September. Giacomo Agostini would claim his tenth world championship in 1971, passing Carlo