I like these guys and the tests, but the logic of only going 65 doesn't make sense.  I would like to see real world mpg's for trucks in this category and real world here is 75 mph on the interstate and why simulate towing conditions without a trailer, 65 empty and 65 towing are two different ball games anyway.  Last and probably least, you can tow a trailer here right up to the 75 mph speed limit unless otherwise posted.  Anyway, still love this truck but his logic is ridiculous and actually doing the posted speed limit would have effected the mpgs of that truck.