1. The racers shall have no power source. All motive force is provided by gravity.

2. Racers shall be based on a rocker cover from any M.G. or a rocker cover of the same silhouette.

3. The racer shall be no more than 40mm longer than the rocker cover base.

4. Wheel track shall be no more than 200mm.

5. Racers shall have four wheels, no more than 155 mm diameter.

6. The maximum racer weight to be no more than 3 kg.