I don't think I would transport it with the rear window like that!! I think I would remove the air conditioner for travel and repair the window or if the weather is nice enough just tape some plastic in the hole. Replacing the window correctly and securing it closed would be the best choice but may not be practical not at home. The way it is now I would be afraid of breaking the glass. Good luck take pictures and let us know how the trip goes. (I suspect it will go fine and will you be posting great news!)
Have a great day!
TAC # IN 1 Air#27922