The Yakima Q-towers can be had as a dealer option or direct from Yakima. Then various Yakima accessories like bars, racks, baskets, bike holders and enclosed carriers can be added.
Curt makes an xB hitch, harness and connectors for a total of around $200.
http://www.hitchsource.com/product_i...44fb3646ba0f12
U-Haul evidently buys these items from Curt and re-badges them for total installed price of $350 with warranty.
The Curt/U-Haul hitches can then carry cargo and bike racks.