A problem I foresee is that even if we could determine them to be as good as a human, they will still be different from a human. People will live that would otherwise have died; people will die that would otherwise have lived. Members of the second set will tend to get far more emotionally involved.

As good as humans implies that over one million people would be killed by robots every year. Some of the families, loved ones and attorneys of these people would be able to make very convincing cases that they would not have died if a human were driving. This is a hard problem to overcome.