An alternative to cropland loss for ethanol production?

Something David Brin pointed out recently(among a great many other news items): here's the Wired article. The recent discussion of competition between fuel needs for vehicles and those of humans and other animals on CBC Radio's The Current had triggered a fair bit of ongoing concern for me. Could this work as a solution to that problem?

Hello to New Friends...

...specifically altariel and pompe! Good to see you dropping in!