[Cuog]

While I don't have any pictures, I can give you a basic description of the one I worked on a few years ago.

It was a very basic unit, we made a simple rectangular frame, the front had castors and was covered with a big sheet of diamond plate. At the rear there was a bump over the two drive wheels. It was setup like a basic tank drive robot using all old KOP components.

It worked decently well, one could ride on it with the robot, though we never brought it to competition as the legality was a bit sketchy, and we lacked the room to transport it. There are obvious drawbacks to a tank drive steering on a car, but it was still moderately maneuverable.