As far as I understand, the current behaviour of self-driving cars is to stop the cars safely in a safe place, to the best of their degraded ability.   Once it&#x27;s stopped, the human can either take over.   If a human can&#x27;t, you&#x27;re stuck on the side of the road and you call a tow truck.<p>Which isn&#x27;t really any different than any other sort of major mechanical failure.