I acquired a reefer unit from an old semi trailer. Don't know if it works but my refrigeration repair skills aren't much. But they said the engine ran, and is a diesel. One guy thought it was a 3 cylinder diesel like he has in his little tractor. So if it works, what do I do with it? Air compressor/ generator or inboard boat motor or massive ATV or what? I'm too tall for a Geo Metro, or else I would make a 150 mpg car.