So I take that this sends CAN messages to borgify the steering control in a car with lanekeeping. One that was never designed or certified for FSD. And using only two front facing cameras. There is a whole lot of legal liability taken on by the driver and Comma when this Goldbergian system inevitably fails because it encounters conditions never tested outside of SoCal.
Comma.ai uses uploaded video from anyone[1] with a Comma device to train their models, so it is most definitely not just SoCal. I thought they had a few datasets available because they run competitions on them but I didn't have much luck digging up supporting links
1: I believe it's possible to opt out, and believe it's also possible to change the upload endpoint to a storage bucket that you control, if you do want the segments just not for Comma to have them