Fuel is selling for around $3/gallon, with no relief in sight. A lot of people are ditching their SUVs and other gas hogs for smaller, more fuel-efficient vehicles, or taking public transportation, if it's available. But there's another way to get to work, that is not only cheaper than driving or taking the subway, but has the added benefit of improving your physical health: Riding a bike.

Fidelity Observer did just that for three years, in the spring, summer, and the early fall, weather permitting. I didn't have to buy any special gear except for panniers and a bell, which cost about $140 combined. I already had a midrange mountain bike, lock, and helmet. I wore shorts and an old T-shirt most days, putting my work clothes and shoes in the panners. The commute was seven miles each way, which worked out to about 35-40 minutes door to door. I felt great about saving on transportation costs -- in fact, we managed on just one car for the entire time -- and felt even better about staying in reasonably good shape.

Of course, commuting by bicycle is not for everyone. You may live too far away from work, or the route may be too dangerous. But if you're interested in getting started, I recommend visiting Bike Worker or a bicycle commuter website local to your area to learn about routes, gear, facilities, shops, and other information.

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