Thanks all. Kind of confirmed what I've thinking and seeing. Here is how I'm driving. I try to find a route has 10% steep up, 90% slight grade down. When I hit a hill I try to get as many assist bars as possible up to 3000 rpm. Flat and level never over 2000. Downhill, 1200 - and 100 on instant. I got to work the other day with 72.2 showing

and then 52.3 when I got home.

But then there's a 1000 ft difference.
There was the comment "bragging rights". But BR = $$. Home-work-home is 40 miles. The other day my commute cost me $2.55. Vs say $5.36 (or $7.88 for her blazer). So that MPG number is a 1:1 in my mind with my wallet. So if I could get 100 mpg it would leave more $$ in pocket
cal
PS: That VVVVVVVV 48.1 is my 4th tank.