LOL. I try not to go overboard, but I suppose it is already too late since I am here on this message board!

My observations are closer to 70mpg on a perfectly flat road at 65mph. I never get that over long distances because there are ups and downs in the road, traffic, etc. Also you burn some getting up to that speed in the first place. I can get higher going down hills, but you burn a lot climbing hills. I usually climb hills at 40 mpg. That 40mpg up the hills really lowers your average.

In pure highway driving, I see about 55mpg. For instance, on my many trips to LA I sometimes fill up around Carlsbad (Northern SD county), and when I reach LA I have about 55mpg. Of course, that never lasts long if the cars is used while I am there! But at least auto-stop keeps it from burning gas while idling. Idling is a killer in LA.