Using cruise control saves gas????? Ummm I guess. But NOT using your cruise control & keeping an eye on your RPMs is a LOT better suggestion.

There's no reason you can't slow down a little going up the hill when you're just going to make up that time on the down side.

What a hard concept.

Then the windows VS. AC thing. Get this:

4.1% is a would be a huge difference if you combined it with the other techniques many of us here use.

Bottom line. Nothing is ever going to change here in the US until people change their driving ways.

"Speed doesn't have anything to do with mileage. My truck has an overdrive gear for a reason." - Credited to an unnamed Freeper reguarding changing the speed limit back to 55MPH.