That is the beauty of the Friday -- I show up and check in a large suitcase that weighs in at about 47 pounds. For an end-to-end trip, I would probably get the train back to the start point (with the Friday in quick fold mode) and pick the case up from the hotel.

I have not tried the Friday suitcase-to-trailer idea. In theory it sounds very nice, but I wonder what would happen if one of the little wheels goes off the road on a steep downhill.