Take a look at the future of alternative energy with the 4M Salt Water Power Robot. Put the mini robo-racer together using the collection of plastic body parts, axles, wheels, and motor. Then stir up a mixture of salt water using household table salt and water. Insert the included aluminum and carbon sheets, add a little bit of salt water with the pipette dropper, and ZOOM! You’ve just created a salt water powered engine! Feel and build the future with your own two hands with 4M Salt Water Power Robot.