The major cost in fuel cells will be the refueling infrastructure. You can get hydrogen from methane (natural gas to Americans), and the distribution "pipes in the ground" are already there. But you need the refueling stations as well. For that reason fuel cells for transportation is not going to economically complete any time soon, meaning it's not going to be built very quickly. Splitting hydrogen/O2 and using the H for fuel costs A LOT of raw energy. In time, with more economical, and renewable electric energy production this will happen, and the economy will be there, but not today or the near future by any stretch.

The biggest cost in fuel cells today are the need for platinum. While true catalytic converters use platinum, its considerably less. At the moment the best hope lies in alternative fuel cell materials and production methods. Polymer fuel cells may be the hope here. Yes, I think fuel cells are being incorporated, or will be in certain high end computer products, but I don't know how they can reasonably be refueled. Any one out there who knows, don't keep it a secret.

But for the time being, combinations of more electrical/other power plant hybrids make more sense for most vehicles. I can see a sooner use of fuel cells in things like buses, vehicle fleets, etc because they can rely on a central refueling source that could use natural gas for both, the starting fluid and the power to convert it. With places like the Federal Express headquarters having its vast building covered with photo-voltaic cells, this offers a way to (now the place has such cells on the roof), used to produce hydrogen. From water (power intensive) or natural gas (much cheaper). Fleets of such vehicles can also help us work out the kinks that must show up when large numbers of vehicles are using them.

Another thing you have no knolege about from 35 years ago was that platinum, or was that palladium, (At fifty my 12 old memory is faulting) but the text read that the metal absorbs larg amounts of hydrogen. Metal is metal and can be built into a humungus fuel cell. Soak all the liquid hydrogen into the paladium and build a fast acting fuel cell.

Im still riding on intelect of a 12 year old from 1973, however/but it has been modified

Don't even dare question my 10 year olds knoledge of particle accellerators/particle physics - youl be like a silly goat headbutting a tree

Platinum is good to electroplate engine cylinder because it absobs lubricant oil into its electroplated surface.

Palladium is what absorbs liquid hydrogen qmongst its atoms and can be used to build a fast fuel cell(at 50 my memory is slugish, but there is a lifetime of leathal information in my brain)