You'll find out that Open Wheeler is a catch-all word for purpose made race vehicles with the wheels located outside the car's principal body. This is distinct, in fact, from cars which have their wheel below the body in the style of most conventional street cars. Formula One racers are open-wheelers which is the foremost racing genre as far as single-seaters are concerned.
The driver's body is encased in a minute open-wheeler cockpit, defining the typical open-wheeler style, with his head exposed to the air. Behind the driver the motor is placed, which propels the back wheels. Most types of open-wheelers have a very low and practically horizontal under-tray which helps produce supplementary aerodynamic downforce that pushes the car onto the track, with wings positioned at the front and at the back side of the vehicle.