biodiesel retail locations
 

The gas station across the street from my office is installing pumps for biodiesel. This prompted me (is it super Mormony to use that word here?) to google for other locations, to see if they are popping up in other spots around the state and I found this map...

http://www.biodiesel.org/buyingbiodi...int_map_R_.gif

It surprised me. There must be a lot of waste vegetable oils in the Midwest.

http://www.biodiesel.org/buyingbiodi...lfuelingsites/

No, just more state subsidies.
I think most biodiesel is NOT made from waste oil.

Map of corn production by county (upper is from satellite, lower from survey)
Published in Agron J 99:1654-1664 (2007):

http://agron.scijournals.org/content...m/1654fig4.gif

Makes perfect sense. Especially based on your subsidies comment.

My second post was probably a better explanation than the first, though there is probably a correlation between subsidy and production. The proximity to supply may have a higher correlation. Somewhere (Scientific American, possibly) I saw a study on the feasibilty of biofuels and it mentioned that if the fuel or raw material has to be trucked further than a certain distance, the net energy gain goes to zero (considering the energy costs of planting, fertilizer, harvesting, transporting and processing).