If theres no road salting a car can last literally forever. Especially older cars that were built on solid platforms. So many old big block trucks or diesel mercs in socal still working fine after 40-50 years. I see even older cars too, some of them beat to absolute crap with hardly any paint left on the metal but still in service.
I did the math on the Toyota and based on how many miles I drive in a year (I work at home) and the expected life of the vehicle, it'll run reliably until I'm 169 years old. :)