In my case I see the 85-90MPH Left lane drivers and now consider them as "abnormal". “Dangerous”.

I agree that fast driving can be considered dangerous, although I am finding that my efforts to maximise FE are also becoming increasingly so.

Jumping lights (just changing to red), taking corners too fast and trying not to stop at junctions - all in the name of keeping momentum to save a measly fraction of a mpg are bad habits I seem to be developing.