Apparently it has helped somewhat:
A law-enforcement source said the carjackers hadn’t yet been identified, but were believed to be black men in their 20s, based on surveillance video and statements from Jamie.
There was no sample to my knowledge, but I also did not put a large scale effort into finding footage. In my experience parking lots usuallyt have really bright lights, at least a lot of the malls I have been to do. It's not unfathomable to me that if they had a solid system in place they could have potentially helped the investigation.
What I would like to see is exactly where in the lot it happened. I have yet to see a map of the mall with an X where the murder occurred. Maybe it was out of reach of the cameras?
As for your move out of Jersey comment, one can only hope! We are overpopulated here. Like you feel about manufacturers that won't disclose price I say to them: "Don't let the door hit you on the way out."
FLIR Security | 12/23/13 10:16pm
"They had no good description of the suspects, and there apparently was no direct video surveillance inside the garage where the shooting took place."