[dangerdoc]

There are extremely fast growing varieties of trees, particularuy a couple cultivates of willow.

If there were a cost effective way to convert it to fuel, I can see entire crops of trees being planted and cut for fuel assuming there is a profit to be had.

Assuming a good conversion process, there are options other than trees. We bury hundreds of millions of tons of trash every year. The energy to dry and process it my be overwhelming though.

[StolarStorm]

If there were a cost effective way to convert it to fuel, I can see entire crops of trees being planted and cut for fuel assuming there is a profit to be had.

Apparently their process uses a catalyst that reduces the energy input needed to produce their version of crude. But once you add in the energy needed to grow trees and such, I'm not sure it works out. But there is indeed plenty of waste cellulose plant material around that can be used economically.