1967: Andy Granatelli and his brothers bring a radical new turbine-powered car to the Speedway this year. Parnelli Jones absolutely dominates the field in it, and leads by almost a lap when a bearing in the gearbox fails with just three and a half laps to go. A. J. Foyt weaves his way through a multi-car accident on the final straightaway to win his third '500'. The race is a two-day affair for the first time when rain postpones the event after only 18 laps on May 30. Shortly after the race, USAC officials change the rules regarding turbines to reduce the Granatellis' advantage.