How can I get the best gas mileage out of my Chevrolet Tracker?

My Chevy Tracker 4-door with automatic does not get good gas mileage and I was wondering if there were any tips on how to make the gas last longer or some sort of modifacation that could be performed?|||drive conservatively, k%26amp;n cold air intake system, do a full tune up on it, platinum spark plugs, synthetic motor oil, power programmer since the factory programing is horrible on fuel injected vehicles, good high flow exhuast the cat and muffler are highly restrictive, inflate the tires to what is stated on the sidewall of the tire not what is listed on the door jam.|||Don't drive it.|||use the pedals and pedal it !!|||push it