You can in part blame this on zone pricing
You can in part blame this on zone pricing. I am actually surprised this has not gotten more attention.
Oldish articles on the topic.
http://www.illinois.gov/gasprices/zonePricing.htm
http://findarticles.com/p/articles/mi_qa5278/is_20 …
My local government is taking it on.
http://www.votelouise.com/news/84/slaughter-commis …
http://www.13wham.com/mostpopular/story.aspx?conte …