(a) The Class D special plates and the Class D-U/C special plates authorized in this article may be used for any purpose on any motor vehicle owned by the dealer to whom issued and which is being operated with his or her knowledge and consent and not otherwise: Provided, That under no circumstances whatever may a Class D special plate or Class D-U/C special plate be used on any work or service vehicle owned by a dealer, on any vehicle owned by a dealer and offered for hire or lease, or on any vehicle which has been sold by a dealer to a customer: Provided, however, That a dealer is authorized to use a Class D or Class D-U/C special plate on no more than one courtesy vehicle per dealership: Provided further, That a Class D licensee is authorized to use a Class D special plate on no more than one Class A type pickup truck or van which is specifically identified as a parts truck for the Class D licensee and which is used exclusively for the transportation of parts for the dealership.
(b) Under no circumstances whatever may a Class D-T/R special plate be used for the purpose of operating a motor vehicle upon the streets and highways, or on any house trailer or other trailer owned by a dealer and offered for hire or lease, or on any house trailer or other trailer which has been sold by a dealer to a customer: Provided, That notwithstanding the sale or any provision of this code to the contrary, a Class D-T/R special plate may be used in moving a house trailer sold by a house trailer dealer to a customer for one trip only from the house trailer dealer's established place of business to a place designated by the customer.
(c) Under no circumstances whatever may a Class D-R/V special plate be used for the purpose of operating a motor vehicle upon the streets and highways, or on any recreational vehicle owned by a dealer and offered for hire or lease, or on any recreational vehicle which has been sold by a dealer to a customer: Provided, That notwithstanding any provision of this code to the contrary, a Class D-R/V special plate may be used upon the streets and highways for demonstration purposes only on those recreational vehicles that are subject to registration under article three of this chapter.
(d) Under no circumstances whatever may a Class F special plate be used for the purpose of operating any type of motor vehicle other than a motorcycle on the streets and highways, or on a motorcycle owned by a dealer and offered for hire or lease, or on any motorcycle which has been sold by a dealer to a customer.
(e) Under no circumstances whatever may a special plate authorized under the provisions of this section be subcontracted, brokered, leased or rented.
(f) Every dealer entitled to and issued a special plate or plates under the provisions of this article shall keep a written record of the salesman, mechanic, employee, agent, officer or other person to whom a special plate or plates have been assigned by the dealer. Every record shall be open to inspection by the commissioner or his or her representatives or any law-enforcement officer.