Biking in the city of San Francisco can be dangerous sometimes. We're often worried about cars, motorcycles, even pedestrians not paying attention to cyclists. This is a cool little clip that was shown to me through a friend who's thesis is "urban renewal" and I gotta say, this is definitely a way to gain more cycling awareness.
Time to save some gas money and get that dream bike you've always wanted. If you can't think of a place to purchase a bike, leave a comment. I think I may know a place that can help =)