Enlarge / This year's Indianapolis 500 will be the last to run on E85 gasoline. From next year, the series is switching to renewable ethanol. (credit: Meyer Shank Racing) The IndyCar racing series is switching to an entirely renewable fuel next year. On Friday, ahead of Sunday's Indianapolis 500 race, IndyCar announced that starting next year, the race cars will be powered by a new, second-generation renewable ethanol race fuel developed by Shell. "The fuel and lubricant and energy solutions developed through our strategic relationship with IndyCar and Penske Corporation can ultimately help accelerate reduced carbon emissions from transport in many sectors of the economy," said Carlos Maurer, executive vice president of Sectors and Decarbonization at Shell.