Tracks Cars Only Replacement, Flex Track Race cars for Magic Tracks Glow in the Dark, LED Lights Up Battery Operated Snap N Glow Trax cars Accessories, Compatible with Most Car Tracks for Kids (4packBest Gift for Kids Four different colour of light up track cars can attract kids attention and make them feel happy. Parents can interact with kids by choosing one of the cars, and act as a driver of three different functions. It can not only be enhanced family relationships, but also educated children about traffic safety by these track cars. If you wanna know more details about this track car, please watch the video at the end of the picture! Safe