Examples of three-wheeled concept cars include the Elio, Toyota i-Road and Nissan Land Glider. Each car is at different stages of conception, as of 2015; however, Elio Motors' is the closest to full scale manufacturing, according to Gizmag.
Three-wheeled cars must be registered with the Department of Motor Vehicles as motorcycles. This allows manufacturers to be more flexible in design, although most three-wheel concept cars are designed with standard car features. Many three-wheeled concept cars are equipped with safety features, a steering wheel, control pedals, stability control and comfort controls. A three wheeled car that has passed the concept phase into production, as of 2015, is the Polaris Slingshot.