An automobile body style is the shape and construction of a vehicle's exterior. Common body styles include SEDAN, hatchback, COUPE, hardtop, and CHASSIS. A SEDAN is a four-door car with a trunk, while a hatchback is a two- or four-door car with a rear door that opens upward to access the cargo area. A COUPE is a two-door car with a fixed roof, while a hardtop is a two-door car with a removable roof. Finally, a CHASSIS is the frame of a vehicle, which supports the body and other components.