When will hydrogen cars be available to the public? They are already being used as prototype vehicles. I was?

told by student that Hummer already has one, and that the military has been experimenting with them because of how quiet they are. I showed my class a "Cars of the Future" film about hydrogen powered vehicles. They seem to have endless possiblities, and they are safe. Solid hydrogen fuel in the form of metal alloy can be dispensed and stored. Iceland already has a Shell station that not only dispenses hydrogen fuel but makes it right on the site, so that no delivery trucks are used. The only emision from the engine is a few drops of water. The car that was featured had a chasis with the engine and fuel cells under the floorboard. All that was needed was a body to be lifted onto it.