Selling this Hot Wheels Track Builder Unlimited Rapid Launch Expansion Pack. It's a cool little motorized booster that lets you launch four cars in a row really fast. Great if you're trying to build out a bigger track layout and need some extra speed. It's been played with but still looks good, just the booster unit and the car storage box shown here. No track pieces included, just what you see in the pic. Perfect for adding some more action to your kids existing sets.