Hot Wheels Track Builder Total Turbo Takeover Track Set (Amazon Exclusive) Part of the Hot Wheels Track Builder system Combines with existing track sets that let kids design, create and customize their own race and stunt challenges Comes with a two-way booster for multiple ways to play; includes one die-cast Hot Wheels car Includes car-activated and action-oriented stunts and 2 quick kick loops. Requires 4 C batteries (not included). Works well and long with Polaroid C Batteries If you can dream it, you can build it with Track Builder!