Play with Hot Wheels® in new, innovative ways that inspire creativity and learning while having a blast! The 1:64 scale Speed Winders™ Track Stars™ are powered by rubber bands! Crank up the speed as you wind the rubber bands inside the drive shaft using the back knob! Looking for performance? These rubber band-powered cars can perform up to 5 loops on a Hot Wheels track! Experiment with different bands and adjust the number of times you crank to achieve different speeds and distances. Powering vehicles with rubber bands takes the thrill of Hot Wheels® into the realm of Science, Technology, Engineering, Art and Math (STEAM)— the building blocks for problem solving and innovation. Experiment with the rubber bands included or any others that you can get your hands on. Colors and decorations may vary.