Petroleum City Super Speedway in Petroleum City, is the 4th race track in the Piston Cup Racing Series in The World of Cars Online, after Backfire Canyon Speedway. Built on a old oil reserve, there are oil leaks all over the track. The speedway is located somewhere in the south center of the United States. It was opened at the end of March 2011. You need 640,000 racing points to compete. Only Sponsored cars have access to the track.