I think what's being missed, is that the fuel cells are only one part of the equation. Further development of solar and wind technologies can in time replace the old coal and gas power plants. The barrier is, and always has been money. However, this barrier is being overcome. Wind power now rivals fossil fuel plants on price per kw/hr. Solar panels broke the $1 per watt barrier a few years ago, when I last saw pricing for the panels. Phasing over to renewable power production, and using it to produce the hydrogen for the fuel cells, makes for a viable renewable and clean cycle. Again, it will take time, and will probably not be realized untill most of us living now, have long gone. Biodiesel can become a viable replacement for fossil fuel as well, if people would be willing to take over what is now useless desert to build and maintain algae farms - even at the chagrin of the enviro zealots and terrorists who think no rock should be touched.