A modern day term is "Motor homes"
Answer
urban term for a large multi passenger van or wagon, usually from the '50s. also used today for wind powered, 3 wheeled racing/recreational vessels used...
The term "land yacht" has been used to describe large motor homes, three wheeled sailing vehicles, station wagons, etc., so it depends on what specifically you're referring to.
To my knowledge, the term "land yachts", has been used to refer to very large cars like Cadillac's, R.V.'s, boats on trailers that never get underway and yachts that sit in boat yards due to...