fuel cells are one of the great jokes of the age. particularly as a vehicular prime mover.

when you consider that most of the hydrogen will be produced from the historical hydrocarbons[oil, methane] that we have used for over 100 years, you should recognize that hydrogen as a fuel is a zenith of a con job.

when you do the energy equation of using conventional hydrocarbons as the feedstocks for hydrogen production, combined with the energy requirements that will be consumed to create a new fueling infrastructure, i think that you will notice that any conversion to hydrogen will be a deficit transaction.

i often hear some discuss using the conversion of water to produce the hydrogen. with current technologies, that conversion process requires the inputs of more therms of energy than the therms of hydrogen energy that will be produced.

and then, of course, there is that very nagging issue, where will that water be coming from?