One of my first cars was a 1930 Ford Model A.
Purchased from the original owner, it had been sitting since 1947. The owner was a pretty sharp old German tool and die maker. He had a one gallon gasoline can hanging from the radiator support rods. It went to a two way select valve that was operated from inside the car. The other side went to the cars fuel tank, in the cowl which at the time he would fill with kerosene rather than gasoline.

He would start the car on gasoline and once warmed up, switch over to kerosene. Easier to get and it delivered better mileage.
Very convenient as well since the Ford’s Holley carb had a main needle adjustment knob inside the car. The ignition timing control was also manually set by a lever on the steering column.

He burned very little precious gasoline during the war. The crude old Ford made that possible.