I found this story in the Milwaukee Journal:

SATURDAY, Sept. 22, 2007, 9:22 a.m.
By Mary Zahn

Cyclist shoots motorist after collision
A 28-year-old-man was shot in the right shoulder by a bicyclist, after his car nearly collided with the bicycle, police said Saturday.

According to police:

The man was driving east on W. Burnham St. and the bicyclist south on S. 11th St. about 10:45 p.m Friday when there was a near collision. The man stopped his car to check on the bicyclist who had fallen to the pavement. At that point, the bicyclist stood up and fired three shots at the driver of the car, hitting him once.

The driver then drove to the house of a friend, who took him to the hospital where he was treated and released. The bicyclist was being sought by police on Saturday. No further details were available.