September 12, 2005 Apparently, some of the world's largest automakers were listening when California governor Arnold Schwarzenegger announced that he had a dream of a "hydrogen highway" running through his state and beyond. Last week, General Motors, Honda and BMW acknowledged that they would each be producing small runs of hydrogen-powered fuel cell cars for California's roads within five years. Analysts expect most of the initial production models, probably numbering in the hundreds of vehicles statewide, to be used as part of public and municipal fleets.