Fast Roger is an optimist.

Since I record every single gallon of fuel that flows through my bus I will be able to compare the last 12 months fuel burn per mile with the previous 12 month period and I will share the results at POG III.

I can't go further back because we got the Hummer 24 months ago and the Jeep was lighter.

I drive at the same speed so the results will show the real impact of the fuel change. It is probably double what DD says.