We all know that it takes power to release the hydrogen trapped in various forms on the earth, and the paper outlines the use of solar and wind power for the job. The Blencoe duo also have proposals for the safe storage of hydrogen on vehicles and the safe transportation of hydrogen to refueling stations.
Call me a bit skeptical on whether this is actually doable. I did read it, and I am not ready to give up on hydrogen as a fuel carrier, but, I don't think that the replacement of all gasoline, natural gas, diesel and coal will come from hydrogen. We will need the electricity generated from solar and wind for other uses as well, not just the releasing of hydrogen. Granted, I am not an expert on the subject, and I'm sure they are more knowledgeable on the subject than I am. Draw your own conclusions.
[Source: Hydrogen Discoveries via Treehugger]