Can we use air as a fuel? Yes! This eco-friendly racer is powered purely by free, unlimited air—no motors, no batteries. Step-by-step instructions walk young engineers through the vehicle assembly process. Then use the pumping bar with pressure meter to power-up the chamber with compressed air. When the air is released it rapidly expands, launching the racer over 150 feet in 35 seconds. A pressure-release safety valve protects kids from over-pumping the air tank.

Age Recommendation: Ages 10 and up