Okay, after much frustration with A-B-A testing and searching online forums including this one, I am having little luck really impacting the FE on my new/old Taurus wagon. The biggest frustration is an answer to the roof rack fairing question, which doesn't exist on this site either (if I have overlooked a write-up, please post the link so I can review it). I have the factory rack installed on my car, where the cross bars do not begin until almost two feet behind the windshield. The big question, will the roof rack fairing even make a difference? I have a mocked up one up there now, and it looks as though my FE actually dropped. I still think the fairings are wicked cool, especially with the stickers on the front, but is it even worth it to try?