Re: Self drive
Audi are already running self-driving cars on test in California and Nevada - and they don't have any external indication that they're autonomous
Granted, these only do it in stop-start traffic and on highways, but Audi are already paranoid enough that they're forcing all testers to go on a driving course for familiarisation with the vehicle.
The course is 2+ days, with actual vehicle familiarisation being about 10-15 minutes. The rest of the time is making sure the human is competent, because if the car has decided it can't cope then things are going very VERY wrong.