RARS is the Robot Auto Racing Simulation, in which the drivers are robot programs. It is intended as a competition among programmers. It consists of a simulation of the physics of cars racing on a track, a graphic display of the race, and a separate control program (robot "driver") for each car. All RARS software and activities are free and open to the public. It runs on DOS, Windows, OS/2, UNIX, Linux, and several other platforms.