I used to work near the airport where there are many auto body shops. I'd see cars with the window stickers quite frequently, and wonder how many new cars are actually damaged goods and sold as new. My own Nissan, after having it only a week, I noticed the wheel arches were all bumpy, and when I checked other cars on the lot, they were smooth. The dealer said we can repaint the car if you like--a brand new car? So I said, ok, no thanks. But many years later, about 9, my car started to rust, and I'll never know if it was due to something that happened prior to me taking it off the lot. Because it was always below average for rust, there were many cars of the same age with no rust. But one can't be sure it was a northeastern car. It was junked recently so again I just won't ever know.
Heck my daily driver is 16.5 years old and there is zero rust, but oh yeah it spent its first 8 years of life garaged in FLA