Race Track Sets is fun and ideal toy for training children's comprehensive abilities. This 2-in-1 car track toy with cooperation game brings more joy than traditional single tracks for toys for 3 year old boys. police car, ambulance, school, taxi rs, 6 mechanical buttons and 8 challenges. Press the button to drive the car, use the conveyor belt to climb to the top of the mountain and a series of hands-on operations to make the car arrive at the end. Guide the toy cars through the obstacle and pass each challenge, which is great for training and improving kids’ motor skills, toys for 4 year old boysproblem solving and hand-eye coordination.