[SeekAndFind]

RE: And where in the hell do they get the hydrogen?

According to this site:

http://www.fuelcells.org/base.cgim?template=hydrogen_basics

In nature, hydrogen is never found on its own; it is always combined into molecules with other elements, typically oxygen and carbon. Hydrogen can be extracted from virtually any hydrogen-containing compound, including both renewable and non-renewable resources.

Hydrogen gas is similar to natural gas in that it is lighter than air, so it rises and disperses quickly. Hydrogen is non-toxic and safe to breathe. Hydrogen is also odorless, colorless, and tasteless; since it cannot be odorized like natural gas, hydrogen detection and ventilation systems are employed. Like all fuels, hydrogen is flammable and must be handled properly.

In the U.S., hydrogen is transported safely through 700 miles of pipelines, and 70 million gallons of liquid hydrogen is transported annually by truck over U.S. highways without incident. Both indoor and outdoor hydrogen refueling stations are located in several dozen states and have safely dispensed compressed hydrogen for use in passenger vehicles, buses, trucks, forklifts, and other types of vehicles.

[thackney]

Yep, technically feasible isn't the problem, aside from rockets, most the hydrogen produced in the US is used by the refinery industry. We have many refineries connected to hydrogen pipelines in my area.

The catch is, it isn't cheap.