The Issue of Petroleum Transport Vol I., Addendum 1

Earlier this month I wrote about things that we can do to improve the fuel economy of our cars. In addition to the previous seven concepts, I would like to add these two:

8. Maintain Tire Pressure
Make sure that your tires are filled properly, and not running low. Although tires with less air have better traction in winter conditions (the reason behind this is that it increases the area/distribution of the tire), they do not improve your gas mileage. By keeping your tires properly inflated, it will improve the efficiency of your car.

9. Air Conditioning - If you don't need it, don't use it
Essentially the title sums it up. If it isn't too hot, try to avoid using it, it will help improve your precious miles per gallon.