6-3-4: PARKING FOR CERTAIN PURPOSES PROHIBITED:
No operator shall park, and no owner shall allow a vehicle to be parked, upon a street for the principal purpose of:
   A.   Displaying the vehicle for sale.
   B.   Repairing or servicing the vehicle, except repairs necessitated by an emergency.
   C.   Displaying advertising from the vehicle.
   D.   Selling merchandise from the vehicle, except when authorized. (1996 Code § 10.04.200)