Good question.
Unfortunately, only a fusion/fission/positron anihilation heat source will provide enough cheap & clean electricity for the hydrogen cycle to work efficiently, particularly in fuel cells, which require particularly clean hydrogen.
As much as i appreciate W's courage and plain common sense about many things, he is not yet about to give his
oil pals and father's
oil pals and the Saudis the heebee-jeebees about replacing our
oil economy big time and soon.
But sooner or later we need to tell the arabs to go pound that sand...