Well, the MB is home.
Trip was 1546 miles, 24.5 hrs run time, 26.5 total time (had to pull over for a 2 hr nap when I noticed my vehicle lane placement was starting to lack).
Ran with an MPG average of 32.2 miles (at 65 to 75) until I hit the TX line, knocked it down to 31.0 pulling into driveway, ran 75 to 85 in Texas (with a few roll ons to triple digits).
Interesting, Fuelly shows the 2005 production year as the high point W211 E320 at 29.9 average MPG with almost a million miles logged/reported.....
Mercedes-Benz E320 MPG - Actual MPG from 222 Mercedes-Benz E320 owners
Love the message/dynamic seats even more, set them to full force before trip.