do a search on in car cameras under motoring issues.

I have used em for years. You can set up to leave running when parked- i have a switch if I park i n an undesirable location and want to leave it running.

To be honest best of without them because if you ever bother to play back the hours of footage sometimes its frightening to see how often people approach a vehicle and even try the door handles or have a good peer in through the windows.

The quality camera's monitor sound and g force and will sense a door handle being lifted. On the play back graph it appears as a spike !