Google has announced that for months that they have been testing driverless cars on the streets and freeways of California. I for one am happy at the prospect of driverless cars. No, they will not be perfect, but I have ridden with and been hit by too many humans to know what sort of drivers most of them are!
There are legal hurdles to clear, but I suspect big business will push for this innovation when it become practical. Insurance companies will love them. It will give them a reason to jack up your rates if you insist on driving yourself.
Perfected this will save lives, time, and money.