1. A vehicle or parts thereof which is completely enclosed within a building in a lawful manner where it is not visible from the street or other public or private property;

2. The storage of one vehicle or parts thereof which is located behind a solid fence six feet in height and which is not plainly visible from a street, highway or other property;

3. A vehicle or parts thereof which is stored or parked in a lawful manner on private property on an approved site in connection with the business of a licensed dismantler, vehicle dealer, junk dealer, a towing service, or an auto repair or body shop, when such storage or parking is necessary to the operation of an otherwise lawfully conducted business or commercial enterprise.