This article reminded me of a trip I made a few years ago to a railroad
museum where there were many kind of train engines on display. The one
that stood out the most to me - the most intriguing - was one that had
no boiler, no fire hole, none of that stuff. it was called a yard
engine. It worked the yard around a plant operation and had no fuel on
board  to burn for heating a boiler. The trick on this engine was that
instead of a boiler, it had a high pressure vessel for holding
compressed steam. The pressure vessel was filled with steam at the
plant, then the engine would work the yard all day before having to
refuel (re-steam as it were) again that night.

The concept of using compressed gas (air or similar)  as an energy
source to drive an gas engine may have some validity.

Just my $0.02.

John Rodgers
88 GL Driver
Chelsea, AL

John Rodgers wrote:
> The ultimate alternative fuel vehicle - and it ain't electric!!
>
> Check it out.
>
> http://articles.mercola.com/sites/articles/archive/2008/11/06/the-best-alternative-energy-car.aspx
>
>
> John Rodgers
> 88 GL Driver
>
>