Uhh, am I the only person who doesn't like driving around with a rack when it's not needed? Mine stays in the garage unless I'm going snowboarding etc. Takes about 15 minutes to put on but I would rather not have the wind noise and reduced mileage.
I guess it's just part of my night before snowboarding ritual, along with waxing my board, getting all my gear together, ipod loaded and charged etc. I also usually am putting on my snow tires so I spend an hour in the garage the night before and I'm all kitted out.
I know some people like the look of the rack but the negatives are too much for me!