Hot Wheels Nintendo Mario Kart Rainbow Road Raceway Race Track Set GXX41. Product: Mario Kart Rainbow Road Raceway Track Set. Hot Wheels and Mario Kart bring a dramatic video game level to life with the most iconic and final course in the franchise-Rainbow Road! The 8-foot long track has five translucent, rainbow-colored race lanes that can be configured straight or curved. Kids can use the electronic fair start gate to race up to five favorite Mario Kart 1:64 scale die-cast karts. The Mario Kart rainbow road track set comes with two vehicles: an exclusive King Boo and Mario. Once the karts get racing, they may face banked turns or a wavy road and must pass through the Item Box randomizer to win! Lights and sounds announce the winner at the finish gate. This race track makes a great gift for kids ages 4 years and older, especially fans of Mario Kart! Colors and decorations may vary. Holidays and weekends excluded. All major types of payments are accepted!