223 miles later I was gassing up in Halls, TN and was surprised that the Fat Girl got 39.74 MPG. I used a little over 5 1/2 gallons of gas and made the entire ride without stopping to refuel.
All of my best MPG's have been while following Harleys around.

I got 45 mpg ridng with my oldest brother in the FL Keys this past April.
Of course on the leg of the trip that I got 45 mpg his Sportster got 69 mpg.
I will consistently get 40 mpg riding the BRP as long as I stay close to the speed limit.