• An inertia-driven ride-on, it does not require batteries, gears or pedals. Its innovative design enables your kids to have a fuss-free ride • Your child just needs to sway the steering wheel from side to side to make the car move. The car is powered by centrifugal force, inertia and friction so you don't have to worry about replacing or charging batteries • The ride-on is great for helping your kids develop better motor skills, balance and coordination It makes no noise , which means hours of quiet play • The car has a maximum speed of 10 km/hour. It is ideal for smooth, paved surfaces and will not work on uneven surfaces like grass It's even great fun for adults, so long as you're below 100 kg (if riding on a smooth, flat surface) or below 55 kg (if you're riding on an uneven surface)