Those are only situationally useful. They tend to be too dim and blurry, and if you’re wearing polarized sunglasses they can be totally black. Focusing on them long enough to make out what they’re displaying causes tunnel vision - you can’t really shift your focus from looking around out the windows and back to looking at the screen fast enough.
Back-up cameras are great for measuring the last couple inches of parking.
Those are only situationally useful. They tend to be too dim and blurry, and if you’re wearing polarized sunglasses they can be totally black. Focusing on them long enough to make out what they’re displaying causes tunnel vision - you can’t really shift your focus from looking around out the windows and back to looking at the screen fast enough.
Back-up cameras are great for measuring the last couple inches of parking.