Where i work has police offices above so there is geberally loads of them around!
So this morning i came into the carpark behind a Volvo S70? estate, and i then noticed a light grey box hanging down from the interior pointing at the rear windscreen. It was without a doubt a camera with two strips of infra red LEDs, one strip each side of the lens.
Dark Blue Volvo S70? estate reg GX07 FBW.