And that is not the only indoor drags. They had 1/8th mile at Parc Bercy in downtown Paris in the 90's, and Anaheim Stadium had them too. There were plans for an indoor quarter mile in the Middle East, Saudi Arabia I think it was, that never got built. The indoors was to get A/C and stop blowing sand from getting on the track. One of the dragstrips in Central America, have to look it up but I think maybe El Salvador, has a roof the whole length to make shade and keep the track dry from tropical rains. Looks like a really long apartment building carport.