How do energy vehicle tires
1. Prepare one bottle plastic water bottles
rubber 3-4 lines
are thick paper one sheet
1 wooden skewer.
1 sheet of colored paper
, glue, scissors 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 applying the product to be packed up
4. Use a cutter drill water bottles along the length. Wide and long enough
5. hundred rubber bands together and then tied in the middle of the timber that holds the wheel. And the other end tied to the water bottle. Close the lid
6. turn the wheel back to the rubber energy. To release the wheel The car can run forward.
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