Sport cars are cars that are built to be driven quickly and with agility. The term 'sports car' is used to describe these cars because it implies speed, agility, and performance. It also distinguishes them from other cars on the road. The 's' at the end of 'sports' is a plural, indicating that a single car may have multiple features that make it a sports car. These features could include things like powerful engines, aerodynamic bodies, and advanced suspension systems. It could also include racing-inspired designs and features, like spoilers, wide tires, and low-profile tires. All of these features combine to make a car that is designed to perform well on the track, as well as the open road.