(It's been a while since I did this so comments from any are welcomed.)
Without the original box, and providing you are transporting it carefully on the seat of your car you can get away with—
be very careful to not touch the cartridge and stylus with ANYTHING (hands, sleeves, foam, cardboard, ...)
disconnect all cables
secure the tonearm from moving out of the 'clip' with cable tie, twist tie, rubber band, string, or ...
remove the platter mat and outer ring and drive belt
place folded cardboard at three equidistant points under the inner platter ensuring it is lifted a bit from its normal position
remove the lid, or put foam pieces where it meets the wood and then tape lid in closed position
put everything in the car carefully and ensure nothing will move in a sharp stop or corner
put it where you want it and re-assemble
enjoy!
I think that's it.