That's probably a restriction on the rental that's just an option if you own it. My 2013 Ford allows me to limit several things over 55mph for drivers using my second car key.
Yep, I also use their cameras as baby monitors. RTSP mode to VLC on an old chromebook as an always-on monitor.
The Protect app works pretty well now assuming you have a controller to connect to, but the time between the Video app shutting down and Protect actually working properly was very frustrating. I would never trust the Protect app to stay connected while I'm asleep, though. It's definitely not stable enough for that.