Among RHD countries, is there a country with side under mirror regulation? In Japan the government require large (yes it is not mid size here
SUVs to have visibility to the front lower left, near the bumper. Some manufacturers have a single sticking mirror on the front left fender (which we call fungi mirror), some have special prizm-like door mirror that allows the driver to see front lower left as well, some have camera. Not sure what plans Tesla Japan have, though. Apparently fungi mirror is impossible, so they may drill into the left door mirror and install a camera there? In that case they also need to have some display for that too.
Fungi mirror
サイドアンダーミラー - Wikipedia