My mpg's go in the toilet above 65 mph compared to 60 mph so why would I go much faster than 60 towing?? The most I go is 200 or so miles one way and I don't do cross country trips towing my TT so the difference in time is not a factor to me..
Driving the truck empty, I start losing mpg's above 70 mph.. 65 is the sweet spot for me not towing.. 60 when I am towing... $$ in the tank means more to me than time.
I just ride in the far right lane, so pass me and enjoy.. :)
Mitch