Personally, I can think of lots of edge cases that will be interesting to see answers to. For instance, a 4-way stop - we know how to handle that easily, and can overcome someone jumping out of turn, again, quite easily.

More importantly - who will be maintaining all the traffic changes? An example - a section of Interstate or road is closed for months, whether by damage or construction. And then, when it's clear again?

I'm interested in seeing how these things play out.