I'm having tint installed on Thursday, which should increase it's creepy-factor substantially!
It should also help decrease the blazing sun factor in the lunch and evening drives, so hopefully I can use a lot less A/C. The two tanks when using A/C were at 13.79 and 13.92mpg, so I'm pretty confident it's around 13.85 with A/C. My last fillup was 14.36 without A/C, which is basically the same as what I saw before I fixed the A/C. I'm running through this tank to confirm, since in the last tank I did about 50 miles @ 80mph with no drafting while rushing to get to the airport. I'm sure that hurt MPG by a little bit, but I'm not sure how much.