Is there a way to activate and record video from the inbuilt cameras while the car is off? If not, what are the aftermarket options and estimated costs for a 360° camera system? I ask because my car was just rear ended (hit & run) while it was parked in a handicap spot at Lowe's. Lowe's said the parking lot camera 75' from my car in front of the exit does not cover the parking lot. Go figure!

no good 360 cameras exist, you're best off buying 4 separate cameras.
or do like me and buy TWO dual camera and use each rear camera as side cam

my setup (thinkware F750 + F770) https://mbworld.org/forums/e-class-w...-dash-cam.html

alternatively:
check also here: https://dashcamtalk.com/best-dash-cams-of-2018/

here https://dashcamtalk.com/forum/forums...h-cameras.258/

and here https://dashcamtalk.com/forum/