Hot Wheels Track Builder Swamp Chomp Stunt Part of the Hot Wheels Track Builder system Combines with existing track sets Kids can design, create and customize their own race and stunt challenges Includes car-activated, action-oriented stunts If you can dream it, you can build it with Track Builder! Part of the Hot Wheels Track Builder system, combines with existing track sets! Dangerously dynamic stunt options Stunts are car-activated Connects to any classic orange Hot Wheels track Combine with the other stunts and packs in the Track Builder line to create your ideal, customized track set!