You are very far off from reality.
Since so much of what you said is the same thing as I said, doesn't that make you far from reality as well?
For example, you said: "If a pedestrian runs into your lane and the car does an automatic emergency break AND the car following you crashes into you because of that, the liability issues are clear."
Which is simply an expansion/different case on my "pedestrian considered at fault for darting into traffic."
You don't address my pointing out that the system maker could be held at fault, but I specified 'possibly' for a reason - that's reaching into politics. We all should know that what is 'right' is not always what happens.
Fact is, I figure auto-drive accidents that are the fault of the car will be extremely rare, but still happen. That's where the limited liability becomes important.