It's like magic, but you don't need to be a magician to get it to work. The PlasmaCar is a mechanical marvel that makes use of that most inexhaustible of energy sources, kid-power, by harnessing the natural forces of inertia, centrifugal force, gravity, and friction. It's so easy to operate; all it needs is a driver and a smooth, flat surface. The PlasmaCar is adult-friendly, too. For starters, it doesn't require an expensive power source that needs constant replacement. No batteries, no power-cells, no liquid fuel-just the occasional cookie or two. It's quiet too-the only sound you'll hear is the sound of its wheels. Healthy Active Fun, Just prop your feet up on the footrests and turn the steering wheel to get moving. Powered by children, requires no batteries; moves via mechanical operation. Helps Develop motor skills and provides exercise for kids & adults up to 220 pounds. Strong Durable Construction: The sleek, innovative design of The Original PlasmaCar features a patented safety seat, strong durable body and is kid powered; kid approved! Unlimited Play: This order is for one PlasmaCar. Adult assembly required; instructions included. Please review all warning labels and read instruction manual before using this toy. Fully assembled: 31” x 14” x 16”.