You can actually get 20+ years out of a car, where you live??? I grew up in northern IL, and lived there for 27 years. If you got 15 years out of a car, you were doing well. They just rusted away. I remember our 1988 Toyota Corolla, and our 1991 Toyota Camry, buth excellent and reliable cars, both had to be junked in the early 2000s due to severe rusting. Even my father’s 1993 Caprice had noticeable rust by the time I moved away in 2007.
I am glad I live in southern AZ now, and cars don’t rust here. Models which are extinct in cold northern climates are still driving around here.