Finally achieved my first 80+ segment with my 2001 Insight. (bought used 1 year ago.) Been envying all of you hypermilers - finally getting there myself.
Just came back from a St. Louis to Milwaukee and home again trip. Overall mpg for the entire 827 mile trip was 77mpg but the return segment of 363 miles I got 84.3 mpg.

Primary factors contributing to the high numbers on way home were that I didn't use the A/C (used it on the way up) and drove much slower than usual, 50-53 miles per hour.
Is this what all you hypermilers do? Drive real slow? If any of you manage to drive any faster - even 60mph I would love to hear any tips you might have on long highway trips.