How do energy vehicle tires
1. Prepare one bottle plastic water bottles
rubber 3-4 lines
thick cardboard sheets 1
1 wooden skewer.
1 sheet of colored paper
, glue, scissors, a cutter
2. Cut the cardboard into a circle. 2 Remove the paper and then wrap them around. To reduce friction
3. skewer into the center of the wheel and two wheels. Then glue so tight
4. Use a cutter drill water bottles along the length. Wide and long modest
5 percent rubber together and then tied in the middle of the timber that holds the wheel. And the other end tied to the mouth of the bottle. Close the lid
6. Rotate the rear wheels to rubber energy. To release the wheel The car can run forward.
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