> The mandate is for rear visibility

Specifically, 10 feet by 20 feet directly behind the vehicle. I'm actually curious how this could be achieved with only mirrors. That's a pretty big swath for anything with a viewpoint where the driver is sitting.

> My vehicle has a backup camera with a screen

Early implementations just used a screen in the rearview mirror. No need for any kind of infotainment screen.

In rear view mirror display is mostly just on GM products.