I have a Rhode Gear Euro-Shuttle trunk rack. It's got six straps (two top, two side, and two bottom) and holds the bike like a roof rack; with the fork and rear wheel. It works great on my car. We could use that to hold the bike, then it folds flat so I can bring it back w/me and the Jetta.
Sound good to you?
I don't know if I'll stay overnight, I guess I'm going to play it by ear. I don't mind long days in the car though.
Alex