You may have noticed BP's thinly veiled attempt at green-washing -- renaming themselves Beyond Petroleum and choosing a new green and yellow logo that simultaneously resembles a flower and the sun.
The station at Park Street and West Wash, however, posted a huge sign in the front, "No Ethanol! 100 % gasoline." So I guess patrons don't have to worry about corn sauce ruining the already-ruined carboreatur in their '91 Intrepid.
Yes, nothing says you've moved beyond petroleum like the stubborn refusal to use even the smallest amount of anything else.