Resistance to falling and crashing: Made of plastic, the car is resistant to falling and crashing, you don't have to worry about the baby breaking it. Rubber tires: The tires are made of rubber, with strong grip and longer use. Walk upright: Walk upright with the tail down and turn it up before walking (need to be on a flat surface). Inertial motion, easy to operate, just need gently push forward, the wheel will drive along with the inertia motion. Four-wheel drive inertia power: With strong power, the car can drive without battery. You push it forward, it goes forward, you push it backward, it goes backward.