Hot Wheels Color Makeover Car Pack 2 Packs Full of Unbelievable Surprises! Inside the pipe are two 1:64 scale Hot Wheels "Color Reincarnation" cars with a special coating. In the first reincarnation fill the pipe with warm water. Lower the device and shake until the water changes color. When you take the car out of the pipe The hidden design will be revealed! Do you want to change the design of the car again? Fill the hoses with cold water and lower each car for another great change! To return the original design, immerse the appliance in warm water! to create a bright tuning Apply warm and cold water to different parts of the car, changing the design of the car over and over again. Alternately soaking in warm and cold water. This hose doubles as a reservoir for soaked Hot Wheels cars and is also great for storage! Each set includes 2 cars, sold separately, subject to availability. Colors and appearance may vary.