Track Assembly & FlexibilitySnap-Together Pieces: Individual plastic track tiles easily snap or click together using a tongue-and-groove joint system, requiring no tools.Flexible Movement: The links rotate slightly at each connection point, allowing the track to bend, twist, and curve dynamically.On-the-Fly Adjustments: Users can bend or reshape the layout into sharp turns or hills even while the toy car is driving on it. Anti-Gravity Stunts: This locking mechanism keeps the car physically attached to the track, providing enough traction and momentum to drive upside-down through 360-degree loops without falling off. Battery-Powered Vehicles: The cars are motorized and self-propelled. See photos for what is included in this used set.