Seeing that you're from Saginaw, I would agree that you probably would need something a little better with all the salt and slush. I'm originally from Detroit, and I don't recall the gas station washes doing a phenomenal job in the winter.

Some full-scale car washes allow you to stay in the car when it goes through the wash. If you can find one that allows you to do so, get to the point where the conveyor catches the car and make sure you're in 'D' with the brake on. You might be able to activate Auto Stop at that point, and the engine would be off. I don't know how common those car washes are anymore since I haven't run my car through one of those in years.

BTW, thanks for reminding me - I need to hose the Cheesemobile down!

Jeff