Originally Posted by JJanney
52-53 MPG is possible doing 67, but I have only been able to hold it for minutes at a time. I'll have to try for some decent FE doing 70 tonight on the way to SC.
I can hold it for hours! It's called cruise control.
I do switch off cruise when going up really steep hills, but for mostly level, or gentle hills, cruise does a pretty good job of keeping me around 50+ MPG in a still wind, and it's much less tiring. Into a headwind, of course, no way to keep that up.