If you are looking to further increase your protection, you can simply add a rear camera to most of thinkwares Front facing main units. The rear cam simply fits to your rear window and looks backwards, this plugs into the front unit via the supplied cable (please check unit specs for lead length) and then all footage is recorded on the front cameras Micro SD card.
Thinkware uses 3M VHB (Very High Bond) double sided tape with industrial strength. This is perfect for fitting a dashcam to a windscreen that endures extreme heat and cold environment’s