jandrew, I was also pleasantly surprised. I did 800 miles of highway over the holiday. Kept it at 70-75 mph, occasionally popped up to 80 for short spurts. All 6th gear with rpm's steady at 2000-2200. And it tracked like a laser, very solid. I also had continuous power at all speeds the whole trip. Of course, my mpg experience was a wee bit different than your SE, but I'm not complaining.