"Racer Jackie Stewart began the practice of taping a spanner to his steering wheel after the accident he suffered at the 1966 Belgian Grand Prix, where, after hitting a telephone pole, he sat soaked in fuel in his car for almost an hour until fellow racers Graham Hill and Bob Bondurant managed to remove him using a toolkit borrowed from a spectator."



Source: My Father & http://jalopnik.com/5787688/while-deadly-60s-racing-looked-like-awesome-on-drugs