Pull them back and they ZOOM on their own! Unbelievably fun!!! Hit the road, the wall, or the sofa while playing with your Wheeee-Is! These colorfully decorated toy cars will roll across the floor and into your heart. Each one sports a different personality and comes with its own unique sound - the car rings, the truck chimes, the racer rattles, and the taxi squeaks. Pull them back and watch them goooo! 4 chunky vehicles Perfect for little hands Car rings Truck chimes Racer rattles Taxi squeaks No batteries necessary. With these soft cars, you don't really need tough ankles either