I have rented them, used one to tow my latest project home. 50 bucks a day is a deal. I recommend you go to the website,
http://www.uhaul.com/Reservations/Eq....aspx?model=AT
take the time to put together the package on line first. You can select the vehicle you are towing with and be sure they allow it. As other said, they have some very tight rules regarding the auto transports and will not bend them. That being said, if you do not have a tow vehicle the meets their requirements, you can rent a tow vehicle/trailer combination from them and still save money from a car hauler.
Keith, I have one of those tow bars from Manchester too! I have probably used it/loaned it out more then it was during its rental life!