Be sure you have a very flat, smooth surface for these bumper cars. There is almost zero clearance between the driving surface and the bumper part of the car. Our girls rode them in our driveway/sidewalk and constantly got stuck on uneven surfaces or the edge of the driveway. We had to make the girls get out and pick up and move the car to a flat surface. These are probably much better for a basement or a perfectly flat surface like a tennis or basketball court.