Motorsport

Motorsport  is a global term used to encompass the group of competitive sporting events which primarily involve the use of motorised vehicles, whether for racing or non-racing competition. The terminology can also be used to describe forms of competition of two-wheeled motorised vehicles under the banner of motorcycle racing, and includes off-road racing such as motocross
Stock car racing is a set of vehicles, that race over a speedway track, organised by NASCAR. While once stock cars, the vehicles are now purpose built, but resemble the body design and shape of production cars. NASCAR was organised in 1947
Sports car racing is a set of classes of vehicles