People assumed it would be huge news the first time a car crashed while driving autonomously too though, and it turned out people barely noticed. I'm sure this stuff will need to get figured out, but I don't think it will necessarily be a huge incident the first time there's an accident without someone in the driver's seat. Presumably the first of these vehicles to be deployed will be fleet cars and such and will have specially tailored insurance policies; by the time it's individual owners, the legality will probably be somewhat settled (although there probably will eventually be elements litigated).