We shall see. Just so we are clear.. I'm not a proponent of any alternative right now. All the alternatives out there have their champions. We have used fuel cells for decades. We have dreamed of H2 for decades. We know all kinds of ways... but regardless of what the champions say... they all have HUGE hurdles to overcome. Like it or not, it is just the truth. If we all sat around a table and presented a blue print for a transportation energy supply... H2 might actually come out ahead. Oil might not actually win knowing what we know now. The abundance of H and the fact that it's byproduct is water either through a combustion enegine or a fuel cell make it leap to the front. However... reality is that we already have a transportation energy source, and every alternative has to compete against it. That is a tough sell. I don't care squat about CO2, but I do care that that source is now or later going to come to an end. So people are begining to talk about change, but right now, there has to be a big enough reason to make it happen. It has been proven $4/gal is not a big enough reason. You can say safety and energy density isn't a big deal.... it's a very big deal compared to what we have now. Like it or not, you are competing against what we have now. Everything looks great on paper... things change in the real world. The other thing stopping change is right now even though oil sucks... we are still even with the rest of the world... it sucks for the rest of the world too. So for anybody to make the change... we have to invest HUGE amounts of money while we continue to pay for the old system.... then oil prices fall and we are still paying HUGE sums of money for the transfer.... meanwhile everyone else in the world enjoys cheap oil and our economy goes to crap. There is idealisim on paper... and then there is the real world. Making a change will cost dearly. Making a change gradualy while the rest of the world HAS to do the same keeps the playing field even. When the dust settles, we shall see which alternative wins out or if it will be a combination of a few. Heck... no body has even mentioned bio deisel from algae... it's still as viable as the rest of them on the drawing board.