In ethics you have what is called the "Trolley Problem" or "Trolley Dilemma".
Putting it in this context: You do nothing (leave things as they are for now), 5 drivers will be in fatal accidents. You do so something (introduce autonomous driving which has been tested in labs but not thoroughly on the roads) and those 5 people may not have the accident, but one innocent person who drives carefully is in a fatal accident due to a software glitch. This is a restating of the "Trolley Problem" or "Trolley Dilemma" as it applies to autonomous driving.
This is a much debated ethical question. Now unfortunately there is no consensus on this. It is a belief system. There are some who argue that the one innocent driver cannot be sacrificed to save the five who were destined to die, i.e. we cannot play god. Others would say greater good dictates that we save the five people. While I may believe that the only way software can improve is putting it on the street, as long as the manufacturer takes proper precautions and do not allow known errors to go into production.
@R P believes otherwise, and I appreciate that. There is no right and wrong here. You can read up the "trolley problem" and see that there is so much of impassioned debate on both sides. As a society we need to make a decision, knowing fully well that not all will agree with it.
So if the numbers come in that Autopilot operating cars are significantly safer than the others, would that change your mind?
Even if the numbers come out as you say, it does not answer
@R P 's ethical dilemma, which is "does this entail a loss of an innocent life?". The question he is asking is a related but a little different, he wants to know 1) lives were saved by this technology
and (repeat and) 2) No lives that were not previously in jeopardy were killed by this technology. The first one will be answered by your numbers, the second one is more difficult. So he may not change his mind unless the second one is also answered. More specifically in this case he believes that Tesla has not thoroughly tested fully autonomous driving and should not be putting out such software as it can cause deaths in addition to saving them.
I may not agree with him fully (but I agree Tesla needs to do more) but I understand where he is coming from. I would leave it at that.
Imagine you are standing beside some tram tracks. In the distance, you spot a runaway trolley hurtling down the tracks towards five workers who cannot hear it coming. Even if they do spot it, they won’t be able to move out of the way in time. As this disaster looms, you glance down and see a lever connected to the tracks. You realise that if you pull the lever, the tram will be diverted down a second set of tracks away from the five unsuspecting workers. However, down this side track is one lone worker, just as oblivious as his colleagues. So, would you pull the lever, leading to one death but saving five?
This is the crux of the classic thought experiment known as the trolley dilemma