What does DA symbol mean on Virginia license plates mean?

Drive-Away License Plate:

Issued to persons delivering unladen motor vehicles under their own power from points of assembly or distribution. Issued to banks or lending institutions for the purpose of taking, repossessing, or transporting vehicles for the purpose of preservation, sale, or otherwise in connection with such repossession. Issued to business engaged in the mounting, installing, servicing or repairing of equipment on a vehicle. This is limited to the pickup and delivery of a vehicle only.