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4M Green Science / Salt-Powered Truck 00-03409
Build a truck that runs on nothing but saltwater! This Green Science kit lets you assemble your own toy truck and its amazing power source. Just add a few drops of salty water to the special battery module to create a chemical reaction that powers the motor. It's a cool, hands-on experiment and a powerful lesson in the science of green, alternative energy. No batteries required!
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