I want to help insure my future Tesla Model S even further by adding a dual-channel dashcam. I want to gauge your opinions on what the best dashcam brand (BlackVue?) is in your opinion and how to set it up connected to a power source 24/7 even when parked. I've read a couple of articles and some videos and apparently there are 2 uninterrupted sources of power. The OBD-II port and an unused 12v power source hidden above the Bluetooth mic on the center-top of the ceiling of the car. Just wanted to see if any members here have a dual-channel dashcam setup they'd like to give feedback on. Thanks! Can't wait to start driving my own Model S (signature CPO)!!