Track Builder is all about experimenting and developing skills that drive problem solving and crank up the competition! This complete stunt challenge will test your skill to launch your Hot Wheels® car and stick the landing to slam the hammer and trigger the winning flag! The Hammer Drop™ Challenge is adjustable for endless experimentation. Connects to orange track, bricks, and other sets for building an epic Track Builder world with awesome stunts. Includes one Hot Wheels® vehicle. Challenge Accepted!