I'm not sure that the political 'solution' of giving special privileges to avoid immediate consequences from their actions to AV manufacturers and special respo

I'm not sure that the political 'solution' of giving special privileges to avoid immediate consequences from their actions to AV manufacturers and special responsibility for signoff in the longer term solves the engineering problem that they need each minor version update of their software to have driven tens of billions of real world miles before they remotely approach statistically significant evidence that it is less deadly than the last version, or indeed an average human. And this is where lack of general AI or tractability is an issue; knowing that the software typically makes fewer driving errors than the last version over a typical route gives us no confidence whatsoever it doesn't handle rare edge cases marginally worse leading to a couple of extra fatalities per billion miles (making it less safe than the average driver, many of whom suffer actual legal consequences for their erratic driving killing a person even if all their other driving is 'above average'...). Humans aren't bug-free or particularly tractable either, but at least we have enough of a mental model of how they understand driving to be confident that training them on a certain road sign found in urban areas won't make them more likely to stop on a freeway.