Although as discussed here its this segment of the population that shouldn't be using them for a long time. The tech does have to get MUCH MUCH more reliable before those that CANT take over the car should be using them alone.There are segments of the population where driverless cars could really be useful. Those with disabilities, the elderly who have vision impairment or simply no longer have the motor function skills to drive.
I think it will continue like it has in that small functions will become done by an automated system more and more. More cars will get back up cameras, sensors that tell ou when you are too close to something, these safety features will start to become mandatory.
Then more optional but easier features will get more and more prevalent such as cars that parallel park on their own.
As more time is spent with driverless cars and the tech (and the code base just because we have the tech doesn't mean someone didn't screw up one of those conditionals to make for unsafe conditions too... then again we all know accidents because of defaulty cars happen now too)