Update 12:05 pm: 10 hours and counting. That's how long firefighters have been combating the downtown blaze at Happy's Pizza, starting shortly before 2 am this morning. The fire is still burning at this hour. As a result, Main Street from Packard to Hoover in Ann Arbor is closed due to the fire. The building is said to be a a total loss. So far, no injuries have been reported.
An eye witness view of the scene is available here: