I used the word data loosely, and if it's an analog feed directly into the main panel , it could still be digitized. I believe the MobilEye Q series processor is being used, for now, to process the data from the front camera, which is analog when it enters the lens, but there's a great link I can't find that explains the whole system, and I think it would need a camera that meets certain specs. I'm betting Tesla will move this processing in house, or partner with Nvidia. Maybe they can revise the rear camera subsystem to be more than a glorified rear view cam like my other cars. Overall, it's a pretty effective patched together system, with he TACC being especially good in bumper to bumper freeway traffic. Not so much if your the first person at a stop sign or light. I just noticed the side collision warning documentation also. It's rather too late, or false alarms.
People are going out and installing Blackvue Front and Rear cams, when there's already a cam on both ends. With demand outstripping supply, I doubt if Tesla considers this a missed opportunity. If they can do a falcon wing door, accessing a camera should be easy.
I'm closely arching Volvo, Subaru, and other companies using Eysight or any real time image analysis software for a 360 degree bubble of protection, and maybe built in dash cams with nag screens that say don't use this if it's prohibited in your area, and don't run with scissors. I have two cheap 115 clone dash cams because I like driving the Model S so much I want clear evidence in the event a collision occurs, be it my fault, the cars fault, or the other car/drivers fault. I also get lane split all the time, and I frequently see it coming with rear view on, so I'm watching on one camera, and recording on 2. It's usually during slow creep and beep and I have TACC on.