CHICAGO (WPVI) -- A dispute over a roadway bike lane led to blows on the streets of Chicago.
It started when a bicyclist called out the driver in a white SUV for being in the bike lane.
The GoPro video shows the driver chasing the biker for about a block.
The driver then gets out and attacks the biker, punching him several times in the face.
Chicago detectives are trying to track down the driver.
Cyclist attacked by driver over bike lane dispute
