The Salt Water Fuel Cell Monster Truck Kit is equipped with four-wheel drive mechanical construction. It easily handles different types of terrain with its twisted car body design. The transparent case design allows children to see the rhythm of the piston in vertical or horizontal position. Each monster wheel can change its angle individually and the truck can change its height and shape. Switch between forward and reverse easily with the "positive and negative" connectors. The Salt Water Fuel Cell Monster Truck gives children a chance to learn about new forms of clean energy, while building and powering their very own kit: just add saltwater and roar!