I've been following this company's advertisements for a couple of
weeks now. I haven't seen their system operate in person, but it
has all the signs of a swindle.

They're making ridiculous, semi-scientific claims. Water does not
have any chemical energy to easily release as they say.

They mention that their devices "use a little electricity out of
your car/truck battery" to make the hydrogen. So my guess is that
it either uses a lot of electricity to make a modest amount of
hydrogen or they use very little energy and make a very small amount
of hydrogen. This is done via a well-known process called
electrolysis that has, of course, a net energy loss. In this
process, the loss is usually fairly substantial. You can't get a
net gain in chemical energy as they describe.

Finally, they're not selling a service, they're selling an e-book.
It's a lot easier to get people to buy that than an actual service.

I saw this last week too... it looks like it's in the same vein:
http://www.youtube.com/watch?v=efCelx7qe_M&NR=1

Whenever there is a genuine problem, there will always be people out
there pushing a disingenuous solution to take advantage of people's
greed and fear.

All together, it looks like hokum.
-Greg