Well, here's one I've never seen before!

K Charles wrote:
In MS last year I saw a car pulling a car with a tow bar and that car was pulling a dolly with a car on it. The back two cars were damaged in the front. The middle one had the hitch welded to the frame where the bumper was torn off. Two sets (six cars) 65 MPH down the road. No plates on the middle car.

That was probably a road train heading for the Mexican border, for import. It's common to see the front bumper removed, and replaced with a rigid tow bar. I would assume that the axles are also removed on FWDs. they stuff the vehicles with any marketable used goods that will fit. I recently saw a large flatbed pulling a road train of two minivans. The flatbed had eight foot of a class 8 truck frame with a full diesel drivetrain bolted to it, and everything from a garden tiller, to a child size, battery powered, ride on Jeep, piled high. I have seen them as far north as New England. They do follow the rules on doubles in states that don't allow it. Seeing a convoy of cars and vans, each pulling a similar sized vehicle, heading for Mexico, is pretty common up north.