Have you noticed the dash - 3 live webcams - instead of side mirrors and look at those small side mirrors, I wish these cute things was offered on the model S as well... would that be leagal in EU or USA ? - I see no reason why not, but might be some laws need to be re-writen to allow this - main point is that you can see what is going on behind and at the side of the car.
The US requires real mirrors. They are just for show, as admitted in this interview by Elon: Hands-on video with Tesla Cleantech News and Analysis