What is the price of gas doing by you? It is slowly climbing to $4.00 a gallon, but we live in Oklahoma, so we are about $3.77. If you pass a truck stop, you can still get 100% gas for $3.63 a gallon.
Remember to buy only 100% gas. The price may look cheaper at a gas station with 10% alcohol, but you lose 10% efficiency, so at four bucks a gallon you are really paying $4.40 a gallon.
Don't forget to not idle your car for long, and use cruise control when possible. Other than that, stay home and pray.