Tested and Working. Get ready to boost your racing game with the Hot Wheels Track Builder System Power Booster Kit. This complete kit includes everything you need to take your tracks to the next level. Featuring a multi-color design and Hot Wheels branding, this kit includes a power booster, two pieces of track, and connectors. Perfect for diecast vehicle enthusiasts and fans of the iconic toy brand, this kit is a must-have for any track builder.