So I just put my yakima rack setup up on my camry, and noticed all of a sudden I have less then usual gas mileage. I used to get about 25-27mpg . I just filled up today after having the racks on for a week or so and I only got 23mpg? Can other people chime in if this is true. Im going to be putting a hitch rack on my xb but for now this is going to do I cant believe it effects the mileage this much.