Horizon FCJJ Educational Renewable Energy Kits - Horizon FCJJ-11, Horizon's Fuel Cell Car Science Kit uses a reversible Polymer Electrolyte Membrane (PEM) hydrogen fuel cell that combines electrolysis and power conversion into one single device. Watch as oxygen and hydrogen gases are formed in the two transparent water containers. The car steers independently of the user once in operation: when the car hits a barrier, it will automatically find its way by reversing away at 90°. Included in the box is a Renewable Energy Education Manual as well as an Experiment Guide. This science kit combines cutting-edge science, education and fun for all! Horizon FCJJ-11 Fuel Cell Car Science Kit