Using this product is easy! First, pick your favorite Mario Kart character's vehicle from the assortment. Then, you can start your off - line racing and stunting right away. If you have a Hot Wheels track (sold separately), place the vehicle on it and watch it go. When playing, make sure to keep the vehicle on a flat and clean surface to avoid any unnecessary falls or damage. For maintenance, use a soft cloth to gently wipe the vehicle if it gets dirty. Don't expose it to extreme heat or cold, as this might affect the die - cast material. Also, keep small parts away from children under 3 to prevent choking hazards. Have a great time with your Mario Kart Hot Wheels!