You know you should carpool and take public transportation—it’s just not always practical. But if you have to drive, there are ways you can save gas, money, and the environment. You will need self discipline and regular maintenance for your car.  Step 1: slow down. Driving 55 miles per hour gives you up to 21 % better gas mileage versus 65 miles per hour.  Step 2:  get regular tune ups, and pay special attention to your air filter. Dirty ones diminish air flow which wastes gas.  Step 3: avoid idling which burns more gas that turning your car on and off.   Step 4: go easy on both gas and brakes.  Step 5:  Weight also decreases gas mileage - clean out your trunk.  Step 6: stick to paved roads.  Step 7:  invest in a hybrid.  Also did you know that gas prices tend to be cheapest on Wednesdays??