(not my picture 
I had a SD card fail on this trip, sad because I had a nice time lapse video 
)
YKYAEM You drive this to Texas and back for work and get out 17.4 MPG !!
(LOTS of neutral coasting & P&G EOC)
2015 GMC 5.8V8 6 speed auto
2815.8 miles 161.83 gallons $351.17!
My boss did the same route in his 2014 Chevy van (same drivetrain) with a 12" trailer and a loose nut behind the wheel and got 11MPG.
Think we have the same .cd? we both have 6 tires and around the same weight.
I beat him to one or two checkpoints / meet ups for lunch or the hotel for the night. most of the time I was within 10 miles / 15 minutes behind him.