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the best way that i have found to make a self propelled vehicle, is to use a rat trap. tie string to the wire flipper and fashion a axle to wrap the string in and it acts as a wind up car.
attatch CO2 canisters to the side of a wheel chair and off you go!!! LOL Enjoy it is very fun but dont forget to put your helmet on

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11y ago

What else can I help you with?