Why is gas still so expensive?

America has largely achieved the right to claim energy independence, since our energy exports have surpassed net imports; so why is gas so expensive in Chicago? Yes, that is a "7" in the picture, we have gotten to a point where Chicago stations are charging $7.29 for a gallon of gas; granted, few people use that grade of fuel, but even Regular is $6.59. At that rate a delivery van will use  $100 ...