well this is a hot subject judging by teh number of post in a short amount of time. So let me weigh in on a few of them. First yes making H2 from natural gas does defeat the purpose of being "green". However a benefit is convenance in that you can fill up in your own home. Creating H2 from water via solar or wind, is ineffecent however it is free (minus cell or windmill cost)and very green. It would seam to me that a solar cell array on the roof of my garage to create the H2 while I'm at work, would create H2 for my "fill up" the following morning. Wind power makes more sence to deploy on a community level vs a individual home, so I'll leave that for another day. once a large enough percentage of drivers are using a renewable green and most important decenteralized fuel source market forces will make gasoline for cars a much less powerful market force it is today. As far as pure electric cars are concerned I see the competition between to two similar in concept to the gasoline Vs. Dissel engines of today. both have there pros and cons. Which will prevail...both. I have to disagree with the cost estimate above of 500K. Even 100K seams to far fetched. But before I talk about price numbers I'd like to see some numbers from the manufacture. Otherwise its just guess work. Finally ICE's are on the way out I think we can all agree on that. What we're argueing now is VHS Vs Beta. In the end it might be price that wins out.