You will need to stand on the rear bumper to see the roof and look at the two hinges for the Liftgate, there is barely one coat of paint covering the hinges, you can see right through to the primer paint on the hinges. The dealers response is, seems all the 07 and 08 models are like this, there is a 5 year warranty on rust. I am concerned they might rust years down the road.
On my 07 I noticed some surface rust already on the frame in places. It is only two weeks old. Must have a paint shortage down at Ford. At least the body paint looks ok and no thin places I could find anyway.