These Hot Wheels cars are great to just play with or add to your collection. To use, simply hold the car in your hand and roll it on a flat surface. It's that easy! When you're done playing, put it in a safe place like a display case or a toy box. Keep it away from sharp objects that could scratch it. If it gets dirty, you can gently wipe it with a soft, dry cloth. Remember, these cars are not for use with some Hot Wheels sets, so check before trying to combine them. And since colors and decorations may vary, each car is unique and special.