I've ordered the Drive Recorder, watched the videos and read the PDF. I know I have to enable the drive recorder (legal stuff) and select recording lengths and cameras. I have a question about the Manual/Automatic selection. I certainly want the automatic function in the event of a collision. I would also like to operate the system manually - say in the event of a collision which does not involve my car. Are the functions mutually exclusive? Does Manual activation preclude the automatic accident recording? Any insights?