this is also interesting: http://leg1.state.va.us/cgi-bin/legp504.exe?000+cod+46.2-1992.48§ 46.2-1992.51. Movement by dealers to salesrooms.
Any dealer in trailers may operate or move, or cause to be operated or moved, any trailer on the highways for a distance of no more than twenty-five miles from a vessel, railway depot, warehouse, or any place of shipment or from a factory where manufactured or assembled to a salesroom, warehouse, or place of shipment or transshipment without registering them and without license plates attached thereto, under a written permit first obtained from the local law-enforcement authorities having jurisdiction over the highways, and on displaying in plain sight on each trailer, a placard bearing the name and address of the dealer authorizing or directing the movement.
(1996, cc. 1043, 1052.)
§ 46.2-1992.48. Use of dealer's license plates on newly purchased trailers.
Notwithstanding the provisions of § 46.2-1992.44, any dealer who sells and delivers to a purchaser a trailer at a time when the main offices of the Department, its branch offices, or offices of its local agents, are not open for business and the purchaser is therefore unable to register the trailer, may permit the purchaser to use, for a period not exceeding five days, on the newly purchased trailer, license plates which have been issued to the dealer, provided that, at the time of the purchase, the dealer executes in duplicate, on forms provided by the Commissioner, a certificate bearing the date of issuance, the name and address of the purchaser, the identification number of the vehicle, the registration number to be used temporarily on the trailer, the name of the state in which the trailer is to be registered, and whatever other information may be required by the Commissioner. The original of the certificate and a bona fide bill of sale shall be delivered to the purchaser and shall be in the possession of the purchaser at all times when operating the trailer under dealer plates. One copy of the certificate shall be retained by the dealer, filed by him, and shall be subject to inspection at any time by the Department's agents. If the trailer is to be titled and registered in the Commonwealth, application for title and registration shall be made by the purchaser on the first business day following issuance of the certificate and a copy of the certificate shall accompany the applications.
License plates temporarily used by the purchaser shall be returned to the dealer by the purchaser not later than five days after the issuance of the certificate.
(1996, cc. 1043, 1052.)