Every person hauling, transporting or conveying into, out of, or between points in this State any motor fuel and/or any liquid petroleum product that is or may hereafter be made subject to the inspection laws of this State over either the public highways or waterways of this State, shall, during the entire time he is so engaged, have in his possession an invoice, or bill of sale, or bill of lading showing the true name and address of the person from whom he has received the motor fuel and/or other liquid petroleum products, the kind, and the number of gallons so originally received by him, and the true name and address of every person to whom he has made deliveries of said motor fuel and/or other liquid petroleum products or any part thereof and the number of gallons so delivered to each said person. Such person engaged in transporting said motor fuels and/or other petroleum products shall, at the request of any agent of the Commissioner of Agriculture, exhibit for inspection such papers or documents immediately, and if said person fails to produce said papers or documents or if, when produced, they fail to clearly disclose said information, the agent of the Commissioner of Agriculture shall hold for investigation the vehicle and contents thereof. If investigation shows that said motor fuels and/or other petroleum products are being transported in violation of or without compliance with the motor fuel tax and/or inspection laws of this State such fuels and/or other petroleum products and the vehicle used in the transportation thereof are hereby declared common nuisances and contraband, and shall be seized and sold and the proceeds shall go to the common school fund of the State: Provided, however, that this Article shall not be construed to include the carrying of motor fuel in the supply tank of vehicles which is regularly connected with the carburetor of the engine of the vehicle, except when said fuel supply tank shall have a capacity of more than 100 gallons: And, provided further, that this section shall not be construed to include the carrying of motor fuel in the supply tank which is regularly connected with the carburetor of the engine of any vehicle operated by franchise carriers engaged solely in the transportation of passengers to, from and between points in North Carolina. (1937, c. 425, s. 25; 1939, c. 276, s. 3; 1949, c. 1167.)