I always knew I got better gas mileage in my Vanagon (LVC)  from slowing
down, but here are some stats from Sierra Club:

"The Union of Concerned Scientists tells us that dropping from 70 to 60 mph
improves fuel efficiency by an average of 17.2 percent. *Dropping from 75 to
55 improves fuel efficiency by 30.6 percent*!(3)

Put another way, in a family sedan, every 10 mph you drive over 60 is *like
paying 54 cents per gallon more for gas you bought at $3.25 a gallon*. (4)That
extra cost is even higher for big SUVs and other less-efficient vehicles.

And the time you save by going easy on the accelerator may not add up to as
much as you thought. On a 300-mile trip, driving 65 instead of 70 mph would
cost you only 20 minutes -- but save money and spew less carbon."

Happy driving,

Maggie

'85 Subie-Westy A.B.