It's a great start, but also shows how driving is not a navigation challenge as much as it is a socialization challenge. If I drove right up to some responders dealing with an emergency and repeatedly refused to stop then I could be in big legal trouble and could end up with fines and possibly an arrest. This has not happened with Waymo vehicles because there is legal ambiguity about who is responsible in such cases. Realistic analysis shows these vehicles have a driving record similar to that of overconfident teens which is worrisome.