If I may ask, what is the problem of driving in snow/salt? Mine has had "salt baths" now for 4 years, no rost and the paint is not faded. The only problem is the Swedish idiocy of sometimes laying out gravel on a 50mph road. Usually means 1 windshield per winter... And some marks on the front in the paint.
So in my view the salt/snow is not a problem, its the other particles that fly there amidst. And those we have no matter where...