But also auto pilots do fail sometimes and if the pilot wasn't there...
But there are still single points of failure and the biggest one is the software itself. If the programming is faulty on one, it's going to be faulty on all of them so they will all make the same mistake when the situation arises. With millions of automated cars on the road, that could be a lot of deaths.
Remember, this isn't REAL AI, it can't think for itself or learn from it's mistakes. Or improve it's skills.
So far they have only had proper testing on US roads, which are big and mostly a grid layout. Even then the drivers had to take over quite a lot.
A full level 5 totally autonomous car with no pedals, no steering wheel, no way for any human to control the vehicle, will have "real AI" it will be constantly learning, and adapting and reprogramming, itself.
Yes it learns from its mistakes, and learns from other cars mistakes, as they will all be connected and talking to each other and transferring information.
The basis of these AI units are out there now, and we in Britain have been testing them on circuits and roads for the last 5 years or so.
I have been involved with a couple of companies and the cars are getting very far advanced, and the AI is increasing day by day.
It reacts faster than any human, it processes information faster than any human, it learns faster than any human, and like it has been said earlier, these are still very basic prototypes no where near full production.
The only thing holding us back currently is data storage, and road laws.
Audi has launched the first level 3 car its new Audi A8 that will be on our roads next year, in certain circumstances local laws allowing it will take over completely, and steer, brake, accelerate, turn corners negotiate junctions, and drive at up to 35mph with zero input from the driver, although the driver will still need to be there as the car will hand back control in emergencies and situations it cannot cope with.
The first full level 4 will be about within 3 to 4 years, Level 4 vehicles are "designed to perform all safety-critical driving functions and monitor roadway conditions for an entire trip." However, it's important to note that this is limited to the "operational design domain (ODD)" of the vehicle—meaning it does not cover every driving scenario.
And within 6 to 8 years we will have the first level 5 cars, this refers to a fully-autonomous system that expects the vehicle's performance to equal that of a human driver, in every driving scenario—including the most extreme environments, and the most extreme weather conditions, like off road ice covered dirt tracks during snow blizzards.