Check the link in post three about the First Great American Road Trip in 1903. The progress that was made then in the course of a decade was amazing. Industrial, road building. I've some old camping pics from the 30s, not so luxurious. An uncle installed what looks like 4.8 plywood on top of his car and pitched a small tent on it at night. Any sense, he'd have added wheels and invented pop ups.
My first comment (and the story I’m prnting off) was in reference to your link — the Great American Road Trip. I just didn’t state it that way.