This is the obvious and most ridiculous, but worth mentioning because it could be the most overlooked strategy for saving money on gasoline. Walk! Or bike or use public transit. Driving is the most convenient, but that is the only benefit (in general). Walking and biking let you experience your neighborhood in a more intimate way than zooming through confined in a car could ever allow. Plus, according to Dr. Mike Evans, walking 30 minutes a day has huge health benefits.