In the Seattle delivery center, when we park a car up front for delivery, we set the rear view mirrors to tilt down in Reverse. Of course they may not go exactly where the new owner wants them, but we figure they will easily adjust them when they see the mirror tilt.
Probably more than half don't, but some of them already tilt when I get them. I don't know if the factory setting is random, or if a factory, transport or service person set them along the way. (Sometimes they don't seem to point in a helpful direction).