You can make fuel cells that run directly on alcohol, not hydrogen, you don't need a completely new infrastructure for it, and if we spend only 10% of what we spend on Iraq to develop efficient ways of "growing" that alcohol, we harvest the sun energy that way. The truth is that you can make an internal combustion engine that run on alcohol and the net discharge of CO2 in the air will be less than the discharge involved in the separation of hydrogen, much less since it will be absolutely zero. The equation is zero sum. All CO2 discharged from burning agriculturally grown alcohol is reabsorbed in the growth process of that alcohol, in essence a zero CO2 discharge economy. If energy policies were not left in the hands of the fossil fuel industry, that simple truth would have come to the fore a long time ago. I think that the whole hoopla about fuel cells is a massive hype con game, nothing less. Unfortunately, the green lobby is misleading the nation and the world about CO2, sure, if all we do is add CO2 without reabsorbing it, we may end up with slowly increasing CO2 in the atmosphere, but the earth has a fantastic pair of lungs (the oceans and the forests and of course, alcohol crops) that rebalance CO2 in the atmosphere.
