Motorsports are, in their simplest form, sports with motors. They include aircraft, snowmobiles, snowbikes, and watercraft. Motorsports include 2-wheel sports such as cross country, EnduroCross, freestyle, motocross, and road racing. This sport environment also includes 4-wheel sports like ATVs, drag racing, Formula 1 racing, Grand Prix motorcycle racing, IndyCar, monster trucks, NASCAR, rally cars, side-by-sides, and sprint cars. Motorsports athletes generally live out their racing passion throughout their lifetimes. Organized competition is popular, but there are also families who participate in the sport as a hobby.