I came from a long line of moonshiners and bootleggers. They never ran their cars on alcohol. Gas was cheaper then.
My grandpappy used to run that shit down to oklahoma city twice a month, he said he ran his truck on his whiskey, and i gotta take his word for it.
Gas may have been cheap, but his assertion was he did it so if he had to run, he could destroy the evidence bu burning it, and it was less obvious to have a big ass fuel tank under the bed of your truck attached to the motor, than to drag around 10 or 12 big clay jugs with XXX marked on the side.
Made sense then, and still makes sense now. plus i tasted his whiskey. store bought "white lightning" brand corn squeezin's is for pussies.