The family calls it "The Bus". It has seating for 9, with a "play room" in the back(4'x4' space behind the 3rd row). Outfitted for towing: has a brake controller, air bags in the rear, transmission cooler, upgraded brakes, upgraded exhaust, 7-point trailer connector. We use it to tow a 7500lb GVWR travel trailer ("The House") and somehow we still average 11-13mpg...
Only thing I am aware of is that it came from the factory with DFCO(I didn't know that they could do that on an auto trans?!?). I have an UltraGauge that I will use for long trips.
Will be getting a Hypertech Max Energy controller before too long, should improve performance and economy(however slight ;P).