H2 Combustion-Booster Claimed

Here's one I just read:

http://www.canada.com/montreal/montr...ry.html?id=cfe...

Some fellow is claiming he has a small device that will boost
combustion efficiency and save drivers lots of money, while reducing
emissions.

Obviously, plenty of claims have been made before, so I'm asking --
does this sound on the level?

It sounds reasonable that injecting H2 into your fuel stream can
improve the combustion. I assume that combusting the H2 in your
cylinders along with the regular fuel will boost temperature to give a
cleaner burn. Would the higher temperature harm your engine life at
all?

Since this device supposedly only holds a limited supply of distilled
H2O, KOH, etc which get periodically replaced, can I assume that it's
catalytically cracking some hydrogen from the hydrocarbon fuel stream
itself, so that hydrogen can improve the combustion of the remaining
fuel at the cylinder?

Is this somehow akin to a sort of turbocharger, but which uses hydrogen
instead of pressurized oxygen? Can it work for other things like
aircraft engines, in order to boost their operating ceiling?

Hmm, I dunno, I feel a little puzzled or suspicious of how he's
achieving a net energy gain here. Can anyone debunk any obvious
fallacies here?