Had to get gas just before getting on the freeway this morning for my 45 mile trip to work, so I reset the mpg and decided to leave it on for the trip. 45 miles, all expressway, gently rolling (this is KY after all!). I didn't do any "hyper-miling" tricks, or drive any different than normal. Most of the trip was 70-75 mph, about half the time with cruise on, and about 3 miles of stop and go idiots. Got off the ramp to the office, and the gauge read 26.4 mpg - unbelieveable!!