Slowing down not really saving you much?

[Fat Charlie]

Originally Posted by slowmover

Minimizing risk counts for more than being a dog with his snout stuck out the window. That's the image to retain for being drunk on speed. It's unlikely anyone will maintain an above 65-mph average on a trip of any length. Lane changing, accel and decel events mitigate against it for long term economy. Of which FE is only one piece.

I did it once. Once.

I think it worked out to 70.9 sustained over 7 hours 45 minutes, covering three stops (fuel & food, not police) and NYC traffic when an area bridge was out. It was a brutal, glorious day. Gas mileage? I probably never got worse.

Definitely not for the faint of heart and not something you casually embark on, regardless. Any trip that you can realistically sustain high speeds on is too short for those speeds to save you any meaningful amount of time. Simply not screwing around is going to save you more time (and fuel, etc.) over the long run than pushing things that hard.