I like the "high-end park-and-shower" facilities that are helping this trend. (Thanks for the link, Instapundit.)
(Maybe Austin is a place to introduce a business like this.)
Years ago, I seriously considered this option. The shower problem and the sheer danger discouraged commuting downtown, but I did bike to the Metro-Rail station for years.
Think about how transformative a significant adoption by Americans of plant-based diets and greater bicycle use would be.