4M Wind Powered Racer from KidzLabs. Build this futuristic machine and watch it jet off by transforming wind into kinetic energy! The aerodynamic design uses the same engineering as jet and rocket powered cars. A great gift or project for aspiring engineers or electricians. Discover how the propeller works, assemble the axles and wheels, attach the motor, connect the power source, install the propeller, and attach the battery case. The step-by-step illustrated instructions provide a challenging project while eliminating frustration.