​@Tony Stewart relives his journey to being the only driver in history to complete all 1,100 miles of the Indianapolis 500 and the Coca-Cola 600. To do that, you have to be tough like @Mahindra Ag North America tractors. #NASCAR #Darlington #DoubleDuty #Indy500 #CocaCola600 #DarlingtonRaceway #TonyStewart