Smart Ass Fuel Mule AVIATION EDITION"The Smart Ass Fuel Mule is genius!" That's the most common comment we get when someone sees it for the first time. And as we showed off the product at various boating marine shows, we kept hearing those words again and again stroking our egos and letting us know we were really on to something. There was something else we kept hearing also. 'I need one of these for my airplanes!'. The Aviation Gas Caddy The Smart Ass Fuel Mule electric fuel caddy