It take some energy to get that hydrogen out of gas or whatever. Back in the early 80's I worked for a company that made vacuum tubes. Not just the small stuff some of know from radios and TVs but really big custom made stuff. You haven’t seen a vacuum tube until you've seen one with water jackets for cooling. Anyway for heat treating the metal parts inside including off gassing and forming perfectly pure glass and ceramics hydrogen was a gas often used. We made our own by cracking ammonia. Heat, a catalyst and some processing gave us hydrogen and nitrogen which we used as blanket gas for many processes. 

Dennis

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Dave Mcneely
Sent: Saturday, January 21, 2012 1:55 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Re: Ford Galaxy Friday-Emissions

---- J Stewart <fonman4277@COMCAST.NET> wrote:
> I'll put on my flame suit, but I think the real future is not hybrids, but hydrogen-but not until they have squeezed the last drop of dead dinosaurs out of the earth. Jeff Stewart ----- Original Message -----

The source of hydrogen is natural gas in most applications.  Same dead algae and other marine deposits.  No dinosaurs involved, however.

--
David McNeely