- Bottle Caps
- Rubber Bands
- Take the bottle caps and attach one to each side of the nail. This makes the wheels and the axel
- Glue one set of this to the front of the styrofoam and one set to the back of the styrofoam.
- Cut a rubber band so it becomes a one long piece.
- Attach it between the two nails.
- Take the side that has the rubber band attached to it and wind it again and again.
- This should make the vehicle accelerate in a forward direction.