with a simple rubber band, tape, hangers, and a hotwheel car, you can put motion into the hotwheels that are lying around the house.
please look at all of the pics i have included in this instructable if you don't understand my written explanation.
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Step 2: Choosing the cars
Step 3: Making the launcher
**the hooks cannot close up because rubber band is supposed to be fitted in those hooks.
Step 4: Now to prepare the car
attach it to your car with some tape make sure that the hook doesn't touch the ground.
Step 5: To launch this thing
now hook the hook that's on the car on to the rubber then hold the launcher in an angle and make sure that the rubber band hooks are touching the floor.
pull it back and let it go