Last week, in preparation for a return to school after a decade in professional life, I went looking for a laptop-worthy bicycle-commuting bag. I'd never found anything adequate. But now I have. The salesperson explained to me that the last two years have seen a surging demand for professional bike-commuting materials. It's no longer students and trekkers who commute. The cost of driving to work has driven this change, rather than altruism.

Here is a bicycle parking lot in Austria. My question: have you begun commuting by bike? If so why? If not, why not?