In the last few years three automakers--Toyota, Honda, and Hyundai ----- have produced new cars. California is starting to build hydrogen filling stations. Range is comparable to gas-powered cars, about 300 miles. Automakers have avoided building fuel cell cars mainly because of the lack of filling stations. Electric Power
Two carbon-fiber tanks store 11 pounds of hydrogen fuel under very high pressure (10,000 psi). In emergencies ( a crash), sensors trigger shutoff valves to keep hydrogen from escaping the tank.