9The Registrar shall examine and determine the genuineness, regularity and legality of each application for registration of a vehicle, and for a licence and of any other application lawfully made to him and may in all cases make such investigation as he considers necessary or may require additional information, and shall reject any such application if not satisfied of the genuineness, regularity or legality thereof or the truth of any statement contained therein, or for any other reason when authorized by law.