Shayson 2 Pack Monster Truck Toys Friction Powered Cars Pull Back Trucks，Inertia Vehicle Playsets with Shockproof Spring and Rubber Wheel，Toy Cars for KidsFRICTION POWEREDThese inertia vehicle with strong power 4 wheel inertia drive,just press the vehicle down and move it back slightly to get strong power, then push them quickly, it will run a long distance no matter what it hits. No battery required STUNT 360 ROTATINGThe Pull Back vehicle car will run to all direction with strong inertia power, double sides running, forward, backward, turn left, turn right,even if it encounters obstacles, it will not