A combination car system

Claim 1

In a combination car system, comprising: (a) a first car, capable of running independently, comprising a first pair of front wheels by which said first car is driven, a first pair of rear wheels, a first engine, and a first engine output control element, displacement of which controls the engine output of said first engine; and (b) a second car, capable of running independently, comprising a second pair of front wheels, a second pair of rear wheels by which said second car is driven, a second engine, _.and a second engine output .control element, displacement of which controls the engine output of said second engine; (c) said first car and said second car being couplable together into a coupled car which runs on said first pair of front wheels of said first car and said second pair of rear wheels of said second car, with said first pair of rear wheels of said first car and said second pair of front wheels of said second car being removed from road contact: an engine control system, comprising: (d) a first accelerator pedal attached to said first car; (e) a first displacement transmission mechanism, which transmits displacement of said first accelerator pedal to said first engine output control element; (f) a second accelerator pedal attached to said second car; (g) a second displacement transmission mechanism, which, when said second car is running independently, transmits displacement of said second accelerator pedal to said second engine output control element, comprising: (gl) a connection unit; (g2) a first displacement transmission submechanism, which is, when said second car is running independently, removably drivingly coupled to said connection unit, and which at this time transmits displacement of said second accelerator pedal to said connection unit; and (g3) a second displacement transmission submechanism, which transmits displacement of said connection unit to said second engine output control element; (h) and a third displacement transmission mechanism which, when said first car and said second car are coupled together into said coupled car, extends from a part of said first displacement transmission mechanism to be removably drivingly coupled to said connection unit, said first displacement transmission submechanism being at this time uncoupled from said connection unit; (i) whereby, when said first car and said second car are coupled together into said coupled car, the operation of said first engine of said first car and the operation of said second engine of said second car are coupled together and are controlled from said first car by displacement of said first accelerator pedal, the controlling operation of said second accelerator pedal being at this time disenabled.