George Follmer Masten Gregory 1 David Bruce-Brown, the first American to win a Grand Prix, dies during practice for the American Grand Prize race in Milwaukee, Wisconsin (1912). 3 The FIA declares that beginning in 1993, all F1 cars must have flat bottoms. Ground effects chassis are essentially outlawed (1982). No Subscription? You’re missing out Get immediate ad-free access to all our premium content. Get Started Already a Member? Sign in to your account here.