I was thinking the same thing about the mirrors. Physical mirrors have their own limitations (poor in low light, poor when there is a badly placed bright light

I was thinking the same thing about the mirrors. Physical mirrors have their own limitations (poor in low light, poor when there is a badly placed bright light due to glare, etc), its just that we are used to dealing with them. Tesla's implementation may turn out to be better than that. Of course, it is also possible that Tesla's implementation may turn out to be worse, and his article was phrased as a list of questions that he would like to resolve in a test drive.