A1-GP is an open-wheel auto racing series. It is unique in its field in that competitors represent their nation as opposed to a constructor, which is traditional in most formula racing series including Formula One.
The ARCA Lincoln Welders Truck Series runs on numerous short tracks throughout the Midwest, running mainly in Indiana and Ohio.
Air racing is a sport that involves small airplanes and is practiced around the world. It is somewhat similar to auto racing; however, corporate sponsorship and broadcast media coverage occur at a much lower level than in auto racing.
