Corn oil is used in the recipes of many foods, but can it also be used to cook up an environmentally-friendly form of fuel?  Well according to the National Center for Policy Analysis, the answer is yes, and the group maintains the creation of such a biodiesel fuel results in fewer harmful emissions than conventional petroleum based diesel.  To be sure, biodiesel fuel has been around for a while, but it has traditionally cost twice as much to make, and requires the addition of non eco-friendly additives such as methanol and lye.  But with newer forms of corn oil manufactured from restaurant waste, the costs have now dropped dramatically, so one wonders if this new corn oil idea may one day fry its competition.