Roadbox your Car’s Blackbox
This is an interesting bit of technology borrowed from the aviation industry, Roadbox the blackbox for your car.
The Roadbox works by recording diagnostics from your car (speed, acceleration, etc.) along with a wide angle video feed. If an accident occurs you should have enough data recorded to analysis what caused it. In normal operation (no shunts) the storage space will be reused over and over again and only if an accident happens will it need to be analysed.
The RoadBox driving recorder is available from PLK, found via Love Gadgets, Gadget Reporter and Get USB.