High acv alcohol (whiskey,vodka,moonshine, etc) strung up in a can or bottle with the fuel hose connected would of been just fine for a temporary fuel source.

Electric motors were extremely inefficient then and having the means to connect them to the power train or wheels would of been a ton of work that would require a forge, precise engineering and hundreds of hours of work.

Then there's the batteries, they would of needed a ton of amperage go get up to 88mph so a couple hundred pounds of batteries, they could of stolen them but that's a lot of batteries