[jongraehl]

I think Google can do better than just "not at fault". Many of us have avoided (chain reaction or other) accidents by evading a would-be rear-ender (although this can backfire in that if you use up your cushion you may then be pushed into the obstacle ahead in addition to being hit from behind). Also, there are times where overly cautious braking causes chain reactions and collisions (at least, an extremely competent+cautious friend of mine told me he caused one once - maybe it's rare).

Similarly, although we might do better to choose a world with different incentives (like one where 1/3 or more of cars are rigid rule-entitled automata), many of us have (selfish-rationally) made room for incompetent lane changers even if it means violating lane rules ourselves.