The origin of this model is the Landbuster (set 4404). "This off-roader pickup is just the thing for rocky terrain. Want to cruise the city streets? No problem, just rebuild it into whatever you can imagine!" from the advertisement of Lego.
Drawback of the model is the absence of a drive/steer configuration. I decided to motorise this Lego model by adding a steer and drive motor. The RCX controls the movements of the model.