I got a 61.6 MPGgoing at about half left.
My best ever.
I can't brag about the miles per tank cause I have one of those California AT-PZEVs with the 10.2 gallon tank.

Need fewer troops to support.
Drive a hybrid.
Best tank 71.65 MPG.
Before this car I spent two years learning hypermiling on my 2004 HCH1.