What is a car？

The car originally referred to the combustible gas-powered transport vehicles, also refers to its equipment power-driven vehicles. Usually having four or more wheels, and does not rely on the track or frame lines Vehicles traveling on land. The car is usually used for the carriage of passengers, cargo and traction passenger and cargo trailers, promising to complete a specific the transportation task or job tasks be modified or equipped with special equipment for special vehicles, but does not include exclusively for agricultural use machine. Trailer and semi-trailer does not own power plant, when they form car train with the towing vehicle belonging to the automotive category.