That's an excellent view! I still can't understand - assuming the sighting at Freedom Bridge is the killer - why he would be at or on the bridge if his vehicle was parked at the CPS. I know it not that far as the crow flies, but it isn't a straight shot over to CPS from the bridge. Again, this assumes that the vehicle at CPS was the killer's. So two BIG assumptions there - sighting at the Freedom Bridge is the killer and the killer parked his vehicle at CPS. I believe the two are not related. Either the killer was seen at Freedom Bridge and the vehicle at CPS belongs to an unaccounted for witness or the killer parked at CPS and our sighting at Freedom Bridge is of someone else.
LE is looking for the vehicle parked at the CPS building, but never said why. They never stated if anyone was seen at that vehicle - male OR female. While I suspect LE consider the driver a POI, LE has stopped short of saying they even want to talk to the driver and nothing about they are a POI or suspect. Again, it could be something as simple as a witness stating they saw someone with a professional grade camera taking photos in the area and they got into a vehicle parked at the CPS. This person could be someone on a day trip from Chicago or St. Louis and hasn't paid any attention to the case.