Indianapolis Motor Speedway

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Graham Rahal takes a turn during testing for the inaugural Grand Prix of Indianapolis auto race on the new road course at Indianapolis Motor Speedway in Indianapolis, Wednesday, April 30, 2014. (AP Photo/Michael Conroy)

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Scott Dixon, of New Zealand, takes a turn during testing for the inaugural Grand Prix of Indianapolis auto race on the new road course at Indianapolis Motor Speedway in Indianapolis, Wednesday, April 30, 2014. (AP Photo/Michael Conroy)

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Sebastien Bourdais, of France, takes a turn during testing for the inaugural Grand Prix of Indianapolis auto race on the new road course at Indianapolis Motor Speedway in Indianapolis, Wednesday, April 30, 2014. (AP Photo/Michael Conroy)

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Will Power, of Australia, takes a turn during testing for the inaugural Grand Prix of Indianapolis auto race on the new road course at Indianapolis Motor Speedway in Indianapolis, Wednesday, April 30, 2014. (AP Photo/Michael Conroy)

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Sebastian Saavedra, of Colombia, takes a turn during testing for the inaugural Grand Prix of Indianapolis auto race on the new road course at Indianapolis Motor Speedway in Indianapolis, Wednesday, April 30, 2014. (AP Photo/Michael Conroy)

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Former Indy 500 champion Juan Pablo Montoya, of Colombia, sits in his car during testing for the inaugural Grand Prix of Indianapolis auto race on the new road course at the Indianapolis Motor Speedway in Indianapolis, Wednesday, April 30, 2014. (AP Photo/Michael Conroy)

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Former Indy 500 champion Juan Pablo Montoya, of Colombia, takes a turn during testing for the inaugural Grand Prix of Indianapolis auto race on the new road course at the Indianapolis Motor Speedway in Indianapolis, Wednesday, April 30, 2014. (AP Photo/Michael Conroy)

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Former Indy 500 champion Juan Pablo Montoya, of Colombia, sits in his car during testing for the inaugural Grand Prix of Indianapolis auto race on the new road course at Indianapolis Motor Speedway in Indianapolis, Wednesday, April 30, 2014. (AP Photo/Michael Conroy)

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Sprint Cup Series driver Ryan Newman leads the field to the green flag to start the Brickyard 400 at Indianapolis Motor Speedway, Sunday, July 28, 2013, in Indianapolis. (AP Photo/NASCAR, Tom Pennington, Pool)