Agreed, I consider it insurance not only for accidents but in case I get pulled over for something stupid like running a red light or whatever else a cop might want to make up that can be disproven. I have mine hard wired into my accessory fuse in the dash. My car turns on that fuse as soon as I hit the unlock button on my fob, and it stays on for 30 minutes after shutting the car off. You can't even see the wiring, easy to install and super clean.
Earlier I mentioned 90fps for the memory card, I meant 90mb/s. Here are a couple of vids from my Rexing, the quality of the .mov files is much better than what they look like after they're uploaded to youtube.