This set includes a 64-page instructional book with step-by-step guidance for building 10 LEGO race cars and a custom track designed for simultaneous two-car races. It comes with all 124 required bricks to construct the cars, featuring color variations and interchangeable parts for customization. The product blends STEM learning with creative play, following the same approach as Klutz’s popular LEGO Chain Reactions, LEGO Gadgets, and LEGO Gear Bots sets.