No...we use too many products from wood for that to be a good resource for fuel. That would drive up everything wood-derived just like ethanol has done to corn.
So far the winner looks to be cat tails. Corn produces 200 gallons of ethanol per acre, sugar cane produces 640 gallons of ethanol per acre, while cat tails produce 1000 gallons per acre...and it does not grow on land competing with food. There is enough cat tails growing in the state of MN alone to produce enough ethanol for the mid west to be self-sufficient.
I have no intention of traveling from birth to the grave in a manicured and well preserved body; but rather I will skid in sideways, totally beat up, completely worn out, utterly exhausted and jump off my tractor and loudly yell, "Wow, this is what it took to feed a nation!"