For the purposes of this article, the terms used herein are defined as follows:
Any vehicle or structure 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 use 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, roads, streets or other thoroughfare, propelled or drawn by its own or other motive power.
Includes an individual or individuals, partnership, firm, company, corporation, tenant, owner, lessee or licensee, their agents or servants, heirs and assigns.