As strange as it is to a pedestrian such as myself, sitting in parking lots with the climate set to your liking, the doors locked, and a media on the screen, seems to be an increasingly popular past-time. I personally don't understand it, but cars selling to this use-case are seemingly more successful than cars that don't, and these parking lot homebodies are popping up more and more.
I think it could be because personal space is decreasing in many populated areas. Cars are becoming that for many. Even wealthy people in US cities may share space closely with their families, and the option to go for a drive and enjoy a movie night be a real joy.
I imagine a lot gig economy workers sit in their car between orders. What else are you going to do between uber rides? You either listen to something, watch something, or read a book. Maybe you are seeing some of those?