Galphi 3 Channel WiFi Dash Cam Front and Rear Inside, 2.5K+1080P+1080P Car Dash Camera for Cars Front and Rear, Dashcam with G-Sensor, Loop Recording, 24H Parking Mode, SD Card NOT Included

It’s nice to have to have some sort of dual facing or three channel dashcam. One that records forwards, backwards, and sometimes even out the back window. They’re cheap, easy to install, and curtails bad behavior when people know they’re being recorded. Like car insurance, one never expects this is going to be necessary or useful, until it is. r/roadcam, r/dashcam, have a lot of good examples of how they are useful.