World's Smallest Hot Wheels Stunt Action Set. Defy gravity with the world famous World's Smallest Stunt Action Loop. Featuring the most recognizable Hot Wheels track anywhere - the loop track! Set up the tracks for the best incline, to generate enough speed to make it around the loop! Can you do it? Challenge your friends to see who can master the course! Includes one World's Smallest Hot Wheels Car, Stunt Action Loop, track and connectors.