I'm not surprised since there are many critics of hydrogen as a viable solution to replace fossil fuels.

I've done a little research on this subject for an environmental engineering class that I took a while back and I have to agree with some of the critics.

That said, the technology has tremendous potential and I honestly believe in this technology.

The main problem with hydrogen today is that since hydrogen does not exist by itself in nature, thus we need to extract it… and that requires energy, which today is mostly provided by fossil fuels!

But techniques exists to get hydrogen from non fossil fuels, like water electrolysis, thermochemistry, photochemistry, biomass gasification, etc. The problem is that today those techniques cost a lot of money and are not yet very efficient.