The PlasmaCar‚Ñ¢ is an innovative, ride on toy that harnesses the natural forces of inertia, centrifugal force, friction and kid power! Its sleek, aerodynamic design allows you to reach an exhilarating speed of 10 km (6 miles) per hour. All you need is a smooth, flat surface. Fun for kids and big kids alike. Comes Unassembled for shipping. Adult assembly required. Made of high quality plastics, rugged and durable, easy to operate, no petals, no gears and No batteries required.