My wife just started working again after 10 years of being a stay-at-home Mom. Good timing, eh? I just have her drop me off at work and pick me up on the way home. Ta-da, I don't have to drive my X to work (she has an X, too).

On the other hand, our gas savings is marginal in this circumstance, since I only commute 1.8 miles to work. 1/4 tank of gas usually gets me to and from work for two weeks.