Went to Grafton's pub for some burgers. My bike, along with my friend's bike, was locked together and to a U-rack right on Lincoln in full view of several bar patios. There was also a concert going on at a Old Town School of Folk Music center right where the bikes were locked. Came back after eating, and they were gone. We asked around at the patios, including two women who were dining right next to them, but no one saw anything. A report of a "large, black SUV" from one witness that had pulled up and seemed suspicious in her mind, but they didn't see the bikes taken. I think it was a professional job. The location of the incident was a safe and family-friendly area on a beautiful day. Also a good location to find lots of very expensive bikes, since it's an affluent area. I purchased the bike three hours before the incident.