Courtney Hook wrote:
> Anyone seen the woodburning vehicles that the germans came up with in WW2?
> They basically choked down a woodfire until it gave off ignitable gas
> vapors
> and plumbed that into the engine. Of course wood is not exactly clean
> burning. :-)
> Courtney
>

or you could build a stirling engine in the back of your van!

http://blog.makezine.com/archive/2006/11/made_low_temper.html

runs off differences in temperature!

efficient but tough to make work mobile.

--Wil