Unless that thing has a 360 view there is no possibility of it knowing everything you know at the time. You know just like the dash cams those police are carrying
I guess it would work to prove what you did in the situation assuming you stayed in your car.
Regards, Vermonter
ETA: My original message here may have taken out of context as it was pointed out to me. My point is that much like an officer there will be things you can see and know that the dash cam misses. Those things often make up the totality of the circumstances. The poster above me commented negatively regarding the police and my original comment stemmed from that. If you know me well enough here you know I am pro LEO for sure. Again OP GREAT JOB.