Wingless Sprint Cars race on dirt they do race wingless sprint cars on the asphalt but they are a lot slower. These Sprint cars are mainly raced by the more experienced drivers that have been racing awhile because they are really jumpy and everything happens so fast. They don't have the wing on them because if you had the wing on it the car would be a little slower. These cars go faster because when the wing is on the air resistance is pushing down on the wing which causes the sprint car to go around the corners easier and for the car to not be jumping all the way around the track. Most of the drivers that race wingless also race winged sprint cars because it helps there controlling better.