I ran some tests earlier this year which seem to lineup with the numbers in this thread.
http://www.greenhybrid.com/discuss/s...ad.php?t=14566
I run 60 in a 65 zone and 55 in a 55 zone and it gets me about 65mpg for these segments.
I want to get some other testing done as well:
1. FE vs 30-55mph range
2. FE vs acceleration - Tarabell had some stuff on this
3. FE impact of slowing/stopping at lights.