The article didn't go that far. It suggests using animal fat to produce biodiesel... and if you've read "Omnivore's Dilemma" (especially the corn section) you'll know how much fuel went in to make our food, so here we complete the inefficient cycle of fuel => food (corn mostly) => fat => fuel. *sarcastically* Yay for humankind!!
http://www.renewableenergyaccess.com/rea/news/story?id=50573&src=rss