With all this talk about increasing your automobile's fuel efficiency, and it being an aviation message board, it got me to thinking, what if car's were to have a performance section in their owner's manuals just like in a POH? Even if it were very basic and just showed the fuel consumption under certain common driving conditions, i.e average city driving at 35 mph, or highway driving at 55mph, 60mph, 65mph, 70mph, 75mph, etc.
I'd appreciate seeing something more detailed than just a city and highway mpg figure. Plus it might be a bit of a wake up call for some people to see the fuel savings that would come at the sacrifice of only a few minutes on their drives.
Just some food for thought.