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American motorcycle stunt rider Evel Knievel (1938 - 2007, right) giving a press conference in London, prior to his attempt to jump 13 buses at Wembley Stadium, May 1975. Knievel crashed and broke his pelvis during the attempt on 26th May, after which, he announced his retirement to the crowd. He resumed his career later in the year, however. (Photo by Bob Thomas Sports Photography via Getty Images)