Upon voluntary cancellation or termination of franchise on the part of the dealer, licenses and registration plates shall be immediately returned to the Administration. However, the Administration may grant an extension, upon presentation of documentation acceptable to the Administration, for the purpose of concluding any business of the dealership regarding the disposition of the existing inventory. The dealer shall continue to comply with the surety bond requirements of Transportation Article, §15-205, Annotated Code of Maryland, for any approved extension period.