Environmentally safe, non-toxic and clean. The Salt Water Fuel Cell Car is the smallest, cheapest and the first car to be powered by saltwater. The Salt Water Fuel Cell Car gives children a chance to learn about new forms of clean energy, while building and powering their very own toy: Just add saltwater and go! This environmentally and kid-friendly concept reflects the new, cleaner ways we think about automobile production and demonstrates first hand to children a more effective utilization of our natural resources. Kids will be awed by the remarkable simplicity and effectiveness of the toy. After activating the fuel cell module with a saltwater mixture, the magnesium metal sheet (3 sheets included) can operate the car for about 5-7 hours continuously. If you want to park the vehicle, simply take out the fuel cell module and rinse with tap water and dry.