The Ghost Bike Project started last year as reminders and memorials to cyclists who had lost their lives tragically to drivers. The first Chicago Ghost Bike has been set up in memoriam of Isai Medina. Photos of the bike have appeared on Flickr taken by April Jacobs (here and here) and by Payton Chung, here. The driver was charged with vehicular homicide in mid-January. More photos from around the country of ghost bikes can be seen here.