Definitions. As used in this section, the following terms shall have the meanings indicated:
AUTOMOBILE TRAILER, TRAILER COACH or TRAILER
Any vehicle or structure so designed and constructed in such manner as will permit occupancy thereof as sleeping quarters for one or more persons, or the conduct of any business or profession, occupation or trade, or used as a selling or advertising device, and so designed that it is or may be mounted on wheels and used as a conveyance on highways or city streets, propelled or drawn by its own or other motive power.