Indianapolis Motor Speedway

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E. J. Viso, of Venezuela, looks out from under a rain cover as rain halted practice for the Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Tuesday, May 13, 2014. (AP Photo)

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Carlos Munoz, of Colombia, prepares to drive during practice for the Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Tuesday, May 13, 2014. (AP Photo)

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Jacques Villeneuve, of Canada, puts on his gloves as he prepares to drive during practice for the Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Tuesday, May 13, 2014. (AP Photo)

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Kurt Busch drives a cart back to the garage area under an umbrella as rain halted practice for the Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Tuesday, May 13, 2014. (AP Photo)

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The scoring pylon is reflected in standing water in the pits area as heavy storms halted practice for the Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Tuesday, May 13, 2014. (AP Photo)

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In this photo shot with a fisheye lens, Helio Castroneves, of Brazil, waits in his car during practice for Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Monday, May 12, 2014. (AP Photo)

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Josef Newgarden jumps off a pit wall during practice for Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Monday, May 12, 2014. (AP Photo/Darron Cummings)

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Carlos Munoz, of Colombia, leads E. J. Viso, of Venezuela, center, and Marco Andretti though the first turn during practice for Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Monday, May 12, 2014. (AP Photo)

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Juan Pablo Montoya, of Colombia, puts on his balaclava before practicing for Indianapolis 500 IndyCar auto race at the Indianapolis Motor Speedway in Indianapolis, Monday, May 12, 2014. (AP Photo/Darron Cummings)