Either my car is less efficient or yours is much better....
I recently took the less traveled route on a 400 mile trip.
My average speed was 55 mph, and this was mostly flat roads, and outside temperature was hot that day at 95°F.
I had a passenger along (my Mom) and she had the window down about half way.
At around 150 miles into the trip, the Insight logged 87 mpg.
This is basically lean burn almost the whole way, except for the small towns we went through, where speeds are varying.
Jim.
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