A guy on foot with a two way radio and/or private phone or phone booth access can choose his path and call for a pickup at the corner of X and X.
The actual driver only needs a road map and a couple of test drives (one very recent) around the areas.
I just think the shooter is walking farther than we think. I'm sometimes inclined to think that the Thursday series was almost totally on foot..
Sac
Shooter on foot and later picked up, I've wondered about this too.
Oct. 3 series required covering distances faster than could have been done on foot.