Helmut Deimel debuted his latest film about rallying's wildest era thirty years after the conclusion of Group B rallying. The Austrian hero behind the massively famous "Evolution of Rallying" has compiled the best historical video of the 500 horsepower Group B supercars in their prime for "Riding Balls of Fire." Observing this film demonstrates the rapid evolution of automobiles and racing in the three short years from 1983 and 1986.