1964: Rear-engine, Ford-powered cars sweep the front row, with Jim Clark raising the track record by over seven miles an hour. Tragedy strikes on Lap 2 when Dave MacDonald hits the wall coming out of Turn 4 and his car explodes in a huge fireball. Eddie Sachs and several others pile into the accident, which stops the race for nearly two hours. Both Sachs and MacDonald are killed. When the race resumes, the fast but fragile rear-engine cars fall apart, leaving A. J. Foyt to pick up the pieces, as he becomes a two-time winner. Foyt's roadster is the last front-engine machine to win the Indianapolis 500.