[snowsislander]

During WWII, Japan actually created fuel from pine roots and removed quite a bit of its forests in the process. But from what I have read of it, it was poor fuel that never worked all that well.

I did a quick Google search with "pine root Japan fuel", and I found this page http://www.cominganarchy.com/ that mentions the subject.

Pine roots being harvested in 1945 to be processed into fuel (photo from above website).

[Stashiu]

As a biodiesel user, I firmly believe that use of biomass products is worth the effort to experiment with. You never know where it will take you, but the only way to find out is to look into it.