Thanks, SPL and LOL TCH for your input to my question. A little update here. Going to town with no AC at 50 mph:
67 mpg, .7 gph, 72 lod, 1216 rpm, with battery aid.

On the way back near that same area at 50 mph. It was dark and was hard to tell.
67 mpg, .7gph, 76 lod, 1216 rpm.

I'm improving on going up the overpass and using the accelerator. I taper off enough to keep it at 30 mpg and usually on EV power.

At 450 miles i'm already feeling more comfortable with the hybrid mpg. I picked up a full mpg driving a 45 minute trip up in the mountains and back home. We did make one stop in town then came home. Speed for the trip was 50 with a few minutes at 55 to check the readings.

I really like the way the computer looks at the load. If it's a rather level highway, then it lowers the rpm. Then the gph falls to a nice reading.

I'm looking forward to starting off with a full tank in about a week to see if I can improve.

Burt