There would be a heavy duty spring which when fully wound up would be good for about 20 miles. It would take about 2 hours of sweat to manually do the winding or you could hook up your garden hose to let the water pressure turn the blades on a shaft to do the winding.
Comma after each of the words ”car”, “spring”, and “up”.
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No thank you. The premise alone is bad enough, but coupled with your description field, all I can say is, “Homie don’t play dat.”
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As soon as I saw in my notifications that you had answered this question, I was sure you gave a scientific outlook, so with much anticipation, I gleefully opened it, and you have not disappointed me.
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(wind-powered)