(a) The acceptance by any nonresident of this state, whether a person, firm, or corporation, of the rights and privileges conferred by the laws now or hereafter enforced in this state permitting the operation of motor vehicles, as evidenced by the operation of a motor vehicle by any such nonresident anywhere within the territorial limits of this state, shall be deemed equivalent to the appointment by such nonresident of the Secretary of State of Georgia, or his successor in office, to be his true and lawful attorney in fact upon whom may be served all summonses or other lawful processes in any action or proceeding against any such nonresident growing out of any accident or collision in which any such nonresident may be involved by reason of the operation by him, for him, or under his control or direction, express or implied, of a motor vehicle anywhere within the territorial limits of the State of Georgia, and said acceptance or operation shall be a signification of his agreement that any such process against him shall be of the same legal force and validity as if served upon him personally.

(b) If such nonresident motorist is a minor, then the minor and his parents or guardians shall be deemed to have assented to the appointment by such nonresident minor and his parents or guardians of the Secretary of State of Georgia, or his successor in office, to be the true and lawful attorney in fact for such minor and his parents or guardians, upon whom may be served any summons or other lawful process in any action or proceeding against such nonresident minor, his parents, or guardians growing out of any accident or collision in which any such nonresident minor may be involved by reason of the operation by him, for him, or under his control or direction, express or implied, of a motor vehicle anywhere within the territorial limits of the State of Georgia, and such acceptance or operation shall be a signification of his agreement or an agreement for him by his parents or guardians that any such process against him or them shall be of the same legal force and validity as if served upon him or them personally; and in this respect, the court wherein such action shall have been filed shall be authorized to appoint, upon motion duly made, a guardian ad litem for such minor for the purposes of defending such suit.