Transformer / Wheel

The car would be blocked occasionally if the sand or ice is too thick. And the tires are easy to fall into mud and turn without going forward. The transformer is designed specially for tires of SUV. The key of the design is its double wheel hubs structure. The outer hub extends and rotates to an angle when the car running on the ice or sands. The ice and sand can be blew away to form a relatively flat slope to let the tire out. When the car is stuck by the mud, the outer hub holds the tire by the extended poles, which are connected with the inner hub, increasing its fiction to release from the mud.