In 2000, the Indianapolis Motor Speedway started hosting the United States Grand Prix, which created an unfavorable tight scheduling conflict with the golf tournament.
Later, continuing involvement included a term as Chief Steward for the Formula One US Grand Prix.
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It was raced to reasonably good effect by Derek Warwick and Eddie Cheever in 1989, Warwick finishing in the top six on five occasions and briefly challenging for victory in the Canadian Grand Prix, and Cheever finishing third in the United States Grand Prix, held in his home town of Phoenix, Arizona.
The loading area featured panels with the three Indy events: the Indianapolis 500, the Brickyard 400 and the United States Grand Prix.
In 1966 the team entered cars at the United States Grand Prix and the Mexican Grand Prix with the Scottish driver Innes Ireland, retiring from both races.
The Mustang I made its formal debut at the United States Grand Prix in Watkins Glen, New York on October 7, 1962, where test driver and contemporary Formula One race driver Dan Gurney lapped the track in a demonstration using the second "race" prototype.
The race will be contested on a new, modified layout of the circuit previously used for the Formula One United States Grand Prix as well as the Moto GP motorcycle event.
On August 29, 2010, Lenz was killed in an accident during the warmup lap of the United States Grand Prix Riders Union race during the Red Bull Indianapolis GP, the youngest competitor to be killed during an Indianapolis Motor Speedway race.