Two things come to mind when reading your initial setup:
First: Greater fuel savings can be achieved when suggesting a minimum CAFE mileage for all vehicles. At 15,000 miles/yr going from 20 to 25 mpg saves as much fuel as going from 40 to 66.6 mpg. Imagine all pickups and SUVs on the road averaging 25+ mpg... Isn't it the reduction of oil dependency/consumption that we are striving for?
Second: I see no mention on driver education. We all know that one can quite easily improve mileage without any physical modifications by 20%-30%, all by just changing the way one drives.
All that being said, a big thumbs up (
) for dedicating time to writing a white paper on these issues.