Any person holding a commercial dealer’s license issued by the Department of Aviation who desires to be subject to the tax imposed by subdivision 3 of § 58.1-1502 shall notify the Commissioner in writing of such election. The election may be made at or before the time for filing a return as required by § 58.1-1506. An election shall be revocable only by permission of the Commissioner. Upon revocation of an election, the tax imposed under subdivisions 1 and 2 of § 58.1-1502 shall immediately become due and payable. Any person who so revokes an election shall be ineligible to make an election under this section for two years following such revocation.