Police said the victims were in a work van on northbound I-75 at about 11:15 a.m. April 29 when they saw a Chrysler 300 driving erratically.
As the victims were exiting at Big Beaver, the 300 drove onto the shoulder of the ramp and hit several traffic cones.
Police said the driver motioned for the victims to roll down their window at a red light. He then got out of his car and threw an Arizona iced tea at them.
While driving away after the light turned green, the victims heard a bang so they drove to the police station, where a bullet hole was found on the passenger side of the van.
The victims told police that they don't know who fired the shot because there were four people in the 300.