Thanks to all you folks for all the help and excellent recommendations. I'd been wondering about that strap on the left side of the trunk, the bottle of oil makes a ton of sense.
I'm still fixated on what is supposed to attach to those two threaded posts. I did notice on realoem that there are two versions of the mobility system; one in a canvas bag and one fitted into a foam tray. Here is picture of the foam tray model:
The real foam tray (Item #3) might not look anything like the picture, and maybe it's supposed to be screwed down?
Anyone ever get one of these?