Stop in for a cup of coffee

WV64Signet said
There's that style and then there's one that is essentially a 5th wheel hitch on the wagon roof..I think a single axle trailer

This

Harmon Shadow Roof-Mount RV Trailer Is The Best And Worst Of The '70s

View attachment 1716196767

Surely they had to add stiffeners to the uni-body structure to keep that Impaler from bending into a U shape