FYI that those that are thinking of it. I have more GoPro's than one person should own, but they make terrible dash cams because they won't start recording on power on and they won't loop, so when the SD card gets full they don't delete the oldest. There are some workarounds but a dedicated cam works best. Garmin is starting to make some good ones that also incorporate GPS info into the data stream. I own this one:
https://buy.garmin.com/en-US/US/shop-by-accessories/other/garmin-dash-cam-20/prod146282.html
https://buy.garmin.com/en-US/US/shop-by-accessories/other/garmin-dash-cam-20/prod146282.html