OK, I went to fill up and check out what my mileage was after using the P&G and EOC techniques.

When I put the pump into my gas tank it stopped at .5 gallons and wouldn't discharge anymore gas. I thought that it was the pump so I held it back some until it would allow it to pump the gas in. I was able to get 2.66 gallons total in and it was topped off to the fill tube. I don't do this that often I was just caught off guard by the whole situation.
My question I guess would be is it logical that I only burned .5 gallons? I mean, I was able to squeeze 2.66 gallons into the tank albeit overfilled.

I am trying to maintain my fuel log and this throws a huge wrench into things. I mean is it possible that I almost got 80mpg in 100% city driving?
-Nate