Keep Tires Properly Inflated
Properly inflated tires improve gas mileage by about 3%, saving you money between every fill-up (www.fueleconomy.gov). And since you use less gasoline, because there is less drag on your engine, your vehicle produces less air pollution. Another great benefit to checking your tires once a month is that your tires will last longer, so you can put off buying a new set of tires and keep the green in your pocket!
For more information on driving green and saving money click http://www.deq.pima.gov/educ/index.html.