Improve your gas mileage

Here is a simple way to improve your gas mileage, turn off the a/c vents on the passenger side of your car, or back a/c vents in an SUV when you drive alone.

Since you don't need to keep an empty seat cool, turn of the vents on the empty seats. This will increase the flow of air to the drive seat, and you will use less and cool down faster ;-)