This is my transportation bike. I ride 140 - 160 miles a week, 20 miles a day including commutes. It is a fixed gear (you pedal forward you go forward, you pedal backwards....) I have other bikes but this works the best. I always lock it up, but if it is stolen I can replace it for $300. I ride it to school, work, the store, dates, and even bars. I use a Chrome Messenger Bag for cargo. I learned how to repair and maintain a bike with this one because it's simple and no bike shops around me want to deal with it.
It has excellent theft protection, it's spray painted (ugly), the wheels don't match and most people can't ride it (no gears). The current models look nice and have lower quality parts for twice the price. This bike is recycled.
For those of you who want to ride a bike instead of driving a car take a look. It's easy to become lost with the mechanics, the spec's, the accessories and the brand names. But isn't that what car companies have been doing, creating a need to fill, and selling it to us. Have you noticed placement of logo's and signage on your bike. Suspiciously like a car, with every part a "system" that's trademarked. The cost to replace many parts on a bike are car- high.
This basic transportation is even different from a new bike. It comes with an online mechanic/philosopher:
His website will tell you every fact, technique, and idea you will need to ride this bike for years. Sheldon Brown rides bikes because he likes too.
I point this out and present my bike because many, would be car free people, might feel the barrier to entry, or "How much?" to get started is expensive - it's not. Some people are intimidated by the mechanics and amount of "things on a bike" my example is simple. Some people don't want a showroom and a salesman, this bike can be built by a local co-op or college, in addition to your local shop.