Fuel Saving Tips
50/50 Rule
As the television show Mythbusters has proven—when traveling under 50 MPH it is more fuel-efficient to leave your windows down and your AC off. When traveling over 50 MPH it is more fuel-efficient to have your AC on and your Windows up.
posted by TikiTantrum on August 10, 2008
this tip works for 89% of voting Fuelly members.
