-> pump hydrogen into bottle.  presto..cleanest and hottest fuel
-> known to man is available for an intelligent persons needs.
 EH> _Patient_ person's needs you mean.  There are slower things
 EH> in the universe than electrolysis but not many.....
That depends...
When I was a kid I did some "chemistry experiments",  and one of those was 
electrolysis.  Used a couple of carbon rods pulled out of old D cell 
batteries for electrodes.
I wasn't real sure that things were working when I tried this setup with some 
batteries,  I think I had maybe 3 volts across it or something,  though after 
a while I did see a microscopic bubble or two.
So I got myself a line cord,  and a "selenium rectifier" that I had salvaged 
out of some old TV or something,  and hooked _that_ up!  
You should have seen how quickly it got a whole test tube full of gas!  
I had to keep adding water,  and of course the concentration of the "stuff" 
that was in the tap water I was using kept getting higher and higher as the 
water itself was used up.  Turned *BLACK* after a while...
I still don't tend to drink all that much tap water even to this day...
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