They can if you design them right! My own invention used springs and a balance wheel, something one might refer to as "clockwork" in the modern era.
Of course, this was before the widespread use of steam power, and the modern internal combustion engine. The principles of moving gears and mechanics are very similar, but these modern automobiles are able to generate much more power from the ignition and combustion of flammable liquid fuels.
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They can if you design them right! My own invention used springs and a balance wheel, something one might refer to as "clockwork" in the modern era.
Of course, this was before the widespread use of steam power, and the modern internal combustion engine. The principles of moving gears and mechanics are very similar, but these modern automobiles are able to generate much more power from the ignition and combustion of flammable liquid fuels.