[VeniVidiVici]

Maybe if they actually cut the speeds BACK to 55 then we could put enough pressure on the politicians to get tough on the Saudis :D

The one good thing about aging 30 years from the last time politicians introduced this insanity, is that I'm a much better shot than I was as a teenager.

[Echo Talon]

Drive steadily at posted speed limits.
Increasing your highway cruising speed from 55mph (90km/h) to
75mph (120km/h) will boost fuel consumption by about 20%.
You can improve your gas mileage about 15% by driving at 55mph
rather than 65mph (104km/h).
Note how quickly efficiency drops after 60 mph

Not sure what site this is, but this is where I found this info eartheasy