It's a natural. But the dewar is apparently the stumbling block. But some other companies are working on alternative fuel vehicles. Today DaimlerChrysler leads the field in hydrogen fuel cell technology. Unlike Los Alamos' H-Car, Chrysler's end product is electrical power from hydrogen reactions.
Electricity is used to power their vehicle.
Michael Heller is the editor of WaterLine magazine, which appears Thursdays inside the Sun Herald.