Get room to vroom with the Hot Wheels® Track Builder Car Factory! Simply set up the track in a spiral like a real factory and place a car at every gate. Launch one car from the top and release any other car that has what it takes to “pass” inspection—but watch out! Cars that are “rejected” will be thrown off the track! This track set features unique building blocks so kids can build and rebuild the fun in every direction—horizontally or vertically—for a customized experience every time! Includes one Hot Wheels® car so the fun starts right out of the box. Each sold separately, subject to availability. Not for use with some Hot Wheels® vehicles. Ages 4 and older.