The Department of Motor Vehicles may issue special motor vehicle license plates to former members of the South Carolina Delegation of the United States Congress, retired judicial officers elected by the General Assembly or confirmed by the United States Senate respectively, members of municipal and county councils, county coroners, and mayors of this State for private passenger motor vehicles owned by them. The department also may issue special motor vehicle license plates to former members of the General Assembly who are eligible to receive retirement benefits under the General Assembly Retirement System for private passenger motor vehicles and vehicles classified as private passenger motor vehicles in Section 56-3-630 owned by them. The biennial fee for these special license plates is the same as the fee provided in Section 56-3-2020, and only one plate may be issued to former members of the South Carolina Delegation of the United States Congress, retired judicial officers elected by the General Assembly or confirmed by the United States Senate respectively, councilman, coroner, mayor, or member of the General Assembly who is receiving retirement benefits. The plate must be issued or revalidated biennially for the regular registration and licensing period.