Very old Black and Decker CarVac Super (Weetwood LS16)

Very old Black and Decker CarVac Super, a hand held vacuum for cars. It operates from the car cigarette lighter ( do new cars still have these? I don't know). I have not tested it as our car is parked elsewhere due to the ice etc, but I have no reason to think it doesn't work. We were given it and haven't used it, just because we don't clean our car! It has all the bits and instructions. It has been mended with some insulation tape, so perhaps the flex got a bit worn, so care needed when testing it, maybe it might need a proper repair? But it could still have some use?