Goats, mules, donkeys, or other third world transportation modes would have been my first guess.
You're a well-traveled guy i see. Since this seems hard to comprehend for some, i am referring to the fact that not all countries have different states forming them, therefore no laws which pertain to these (federal?) aspects - i.e. no need to match stickers and state plates, you are free to travel or reside with whatever local plate/registration you have without getting in trouble. At worst you get a small fine for an expired registration.