Quick update: just finished our drive from atl to Beaufort sc. So it 300 miles and we did the speed limit all the way down. 29 mpg at anvg of 68mph. Actually was up to 29.7 at one point but then the speed limit increased from 65 to 70. Impressive especially with a car fully loaded and bikes on the back with a trailer hitch mount.
Old Volvo wagon would have been in the mid 20s!