Assemble 10 of the coolest, fastest, and weirdest cars to ever exist, then race them on a high-quality chipboard track to set the scene for your own LEGO derby. Who will win—Phoenix '77, Winged Chariot, El Scorpio, or perhaps even a souped-up car you've customized yourself? This playful STEM kit introduces aerodynamic concepts and puts physics into action. Includes 124 LEGO elements, 3' long track, and step-by-step instructions. Ages 7 and up.