Not really the same but I recently went to look at a fence I worked on 39 years ago.....post and rail...nailed together with 4" galvanized nails. A lot of the posts are still standing, most of the rails are gone but .....the galvanized nails are still sticking in the posts and look like brand new.
I suspect my galvanized chassis will out last me so I'm not to bothered about spending a fortune of money and time trying to cover it it.....maybe the bits near the wheels will get a blast of stonechip...