Last week I decided to divest myself of my 23 year old winter daily driver (91 Grand Marquis). It seems that 90% of the work I do on it is related to rust, and I foresee more of these problems in the future. Even the brake lines I replaced 7 years ago will soon need replacing again. I can't keep up with the repairs.
Too much of the vehicle has dissolved, even with the rustproofing regimen I use. The body isn't yet perforated, though it has a lot of rust that started on the outside.