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Concept: To install two sets equipped with four small rubber wheels or one complete strong rubber rolling cover connected mechanically to the movements of the transmission through two arms between the main transmission and the proposed sets.

These two suggested sets are to be used manually through gears or push buttons. Also these sets will suddenly act automatically through sensor when one or two flat rear tires took place, the sets will suddenly lower to the level of the ground and act as additional tires to control the vehicle for safety precautions.

Note: This concept could be relocated behind the rear differential and connected mechanically to the differential box with same function mentioned above and this location may be much better.

Benefits:

1- To move the vehicle slowly when stock up on sand or mud areas.

2- To jack up the stocked up vehicle or to replace rear tires.

3- To control the vehicle through sensors during the flat tires of rear tires for safety precaution