[Porsche-O-Phile]

Yea, I know - not saying that it'd ever be a major source of fuel for the masses, but just saying there is a significant amount of the crap produced. Of the sludge that gets collected, I don't know how much (% wise) would even represent usable fuel in a biodiesel conversion. But it's probably enough for a few cars every week or two.

Those things get really disgusting. One look in one and you'll never eat fast food again.