Is the Oak Ridge, Tn. laboratory on the verge of a major discovery?

The scientists, at Tennessee’s Oak Ridge laboratory, are currently working on a project that will convert Prairie Switchgrass to ethanol or alcohol for automobile fuel. This could be a major event for Oak Ridge and close-by Knoxville, Tennessee.

Question: if Switchgrass has been discovered as a possibe resource for conversion to alcohol, are there other plants that also may be converted to ethanol?

Source: CNN Money