You need to go a bit farther back than the '70s to see where Ford is salvaging that "500" name from.
Names like Fairlane 500 and Galaxie 500 from the early to mid-'60s were pretty decent cars: here's a '64 Galaxie 500"
Uhm, trailers optional, of course...
Hmmm..If that car picture was taken in New Mexico, I used to live in that trailer park in the late 70's
LOL
Thats a nice Ford. I'd buy one.