If you are looking to save on gas you might try to make your daily commute in to work and back by public transit. Depending on where you are that might mean by bus, subway or light urban rail. You might also be able to save a little extra money by taking advantage of employer or government subsidy programs. For example, the Department of Agriculture has a program where they will pay transit costs up to $110 a month for their employees who use mass transit. Many corporations have similar programs. If you are going to take mass transit anyway to save on gas, you might as well look into whether your employer will pick up some of the tab!