If the embedded video doesn't work, this is the link to the video on YouTube.
Read more at Urban Velo. See also Flobots website.
I'll be on the Santa Cruz rail trail bike train tomorrow with my children. I hope you're having a good weekend. And for a final word for this Friday night I give you this recipe for pain: Ride 30 miles on a fixed gear bike in hot weather + jump into a cold pool = excruciating leg cramps!