Bike to work day in the summer sees all sorts of press, in most all regions of the US. Some places–like here in Boulder, Colorado–accompany it with a winter bike to work day equivalent, which was today. Owing to the 63 degree forecast and the uptick in general interest for cycling, sponsors are reporting record numbers (again). And, my friend Garvin and his son are highlighted in this video.
It is a natural assumption that the winter folks are the more hearty and might have a more natural inclination to do it year round. But the real question is what happens to all the summer bike to work folks? Why the attrition? This is the topic of a research project soon to be undertaken by the ACT Research Group. Stay tuned.
On January 18, I was in New Haven and it was a privilege to contribute to the Urban Dialogue on 
Tom Vanderbilt writes in Slate about Capital Bike-Share
Further evidence on the difficulty of implementing avant-garde treatments for bicycle treatments;