You could take it a stage further, if you remember the old type of vaulting horse we used to have in the gym at schools (but not sloping as in the picture) you could have three sections which slot on top of each other, the lathe could then stand (by the way of some clamps or whatever system you devise) on the top, it would then mean simply three or four trips to the car, bottom one first slot one on top of the other, lathe on top, plug in and away you go. With the tools etc spread across the sections each one would not be as heavy as one complete unit.
Andy