Thanks for all the help, I understand how it should work now. But after driving home yesterday I think I need to see the dealer.

I reset both the T/C & Trip A. I drove highway at ~ 65mph (except for the drive up a 4% grade) for 1:41hours without any stopping or major slowing down in traffic. When I got home the E/T stated 23 minutes and average mpg was 70.0 (seems to be a max)

The ignition was on for the entire 1:41 minutes I drove.

I'll post what the dealer does.