What science is not able to achieve on a large commercial scale: develop simple cheap and reproducible method to digest and convert the cellulosic material into ethanol in one step prcess animals do it each day at least they digest the fibers and bring it down to sugar and fatty acid level . The microbes helping this process in the gut of cow and buffallow could provide the clue to getting some genes for doing the job at much lower price then billions of dollars being spent on finding the answers. However if its true or not only experimentation can tell.