What's the state of the art w.r.t research on the legal aspects of Artificial Intelligence? As AI gains capabilities, and becomes more prevalent in society, our legal system will encounter questions it has not encountered before.  For example, if a self-driving car is involved in an accident while being controlled by the AI, who is at fault?  The "driver" (who's really just a passenger), the programmer(s) who made the AI, or the AI itself?

So, what's on the cutting edge in terms of these kinds of issues at the intersection of law and artificial intelligence?
One person working in this space is Dr. Woody Barfield. He just wrote a book titled Cyberhumans: Our Future With Machines that focuses largely on the legal/policy issues around AI (and related topics). In addition to the book, he is continuing with other research in this area.