Mark my words. I will do a Slow Roll Detroit ride one day. Probably soon actually as I intend to make a trip out there -- this time bringing my bike with me so I can explore the city at a slower pace (and also not really have to worry about parking).
This video is a joint production with Kryptonite Locks which now also makes bike accessories like lights. Seriously, this Slow Roll movement looks real fun and it's doing good for the greater Detroit community too!