Coskata and General Motors have gone operational with their first production-level flexible input ethanol plant. It makes ethanol out of just about anything with carbon in it: wood chips, old tires, agricultural waste, etc. Much better than corn-based ethanol, though no efficiency numbers are given outright.
This informative video shows how the setup works and what their future plans are. If for no other reason than to significantly reduce our land-fill dumping while cutting into our dependence on oil, this is a great thing.