On Monday on the way to and from work I was able to lock in my crusie control @70 mph for about 25 miles each way. The rest of the distance (about 40 more miles) I tried to keep it at 65 or less. End result was 28 mpg. Not to bad for an AWD car. Might try doing it next time at the speed limit of 65 to see if it improves. At 65 everything is blowing past me, even grandmoms in minivans. But it ain't the grandmoms that worry me it's the haul ass 18 wheelers.