We are developing a system to augment RC cars. The system will allow the vehicle to follow another around turns while avoiding collision with the car in front of it. We are interfacing to the car motor and steering actuator with our own control electronics. We are developing our own sonar sensor because we did not find one commercially available to meet our requirements. The sensor will be able to measure distance and direction to an object. We also will develop a set of control rules to enable the car to follow another retracing the path of the leader.