[nonfamous]

Cameras are not a suitable replacement for rear-vision mirrors for the same reason that screens are not a suitable replacement. It’s even addressed in TFA: focal length.

>>> But more importantly, current screen technology requires the driver to focus on the surface of the screen itself, which is mere feet away from their eyes. This is a large change in focal distance from looking at the road ahead.

If you’re over the age of 40 or so, it takes time, a few hundred milliseconds at least, to refocus your gaze distance. A screen is near. When driving, you’re looking far. A mirror is something to glance at.

I test-drove a Polestar with a screen for a rear-vision mirror (and no actual rear window) and it was completely undrivable for me. It takes longer for my eyes to refocus on the near distance than I feel comfortable removing my gaze from the road ahead. I turned around after 10 minutes and returned it to the lot.

[usehand]

I never said mirrors should be replaced.

Also, this conversation is about backing up and parking (read what I said). When backing up you are mostly looking backwards only, so the focal length adjustment point is moot. Even if you have to switch to looking forwards, this is at low speeds / standing still, so it doesn't make a difference.

I'll restate my point with emphasis because you seem to not have read it: Cameras are infinitely more useful for backing up and parking.