I have inspection mirror and one of these snake cameras for my phone. I reach for the camera at least as often as the mirror. I'd buy another same day if something happened to the one I have. $30 well spent.
Resolution and focal length matters. 10+ feet of cable is way more than needed for automotive, arms length plus an extension would be way more convenient if you can find a shorter version.
https://www.amazon.ca/Seesi-Endoscop...dp/B07PBF6DX5/