I honestly don't think this will ever be the case because it relies on two major assumptions: (1) there is some parent process in control of both cars involved

I honestly don't think this will ever be the case because it relies on two major assumptions: (1) there is some parent process in control of both cars involved in an accident. (2) all cars implement the same AI. What is far more likely is a future in which there are many different types of self-driving AIs on the road from many different manafacturers, each of which will have different algorithms for all aspects of autonomous driving. Ultimately, this diversity will lead to carmakers designing algorithms that speculate on what another car might do. This is likely because the coordination costs between n different automaker's autonomous systems will rise with the square of n. In other words, unless we end up with a monoculture or only two or three different systems on the road, coordination just isn't going to happen. The second issue is that even if the automakers could coordinate, such coordination would rely on vehicle to vehicle communication of the actions each car wants to take. Coding the decision making for other cars into each car to anticipate onboard makes no sense because your vehicle would not have access to the sensor data to resolve the decision of the other car. Lastly, with V2V communications, negotiation and decision making, the impact of latency in likely to be so costly to making the best decision that any attempts of doing V2V negotiation will either be non-trivial or limited to an extremely simple model such as each car proposing n strategies (where n is like 2-3 solutions) and each care deciding the best option and incompatible option. This could keep negotiation fast enough to make a best decision. Regardless of whether there is negotiation or merely guessing in real time about what the other car might do, the only thing each autonomous system designer can consider is the well-being of their passengers. All vehicles involved in an imminent accident acting in the self interest of their passengers is likely to be the optimal solutions. The only improvement I can see is some negotiation where some ideas of what decisions the other car might make allows each vehicle to make slightly between decisions to preserve the well being of their passengers. People just like bringing this up because it lets them discuss this interesting philosophical question about morality. Once these discussions encounter the realities of how autonomous cars are likely to evolve and penetrate the market, it's going to be painfully obvious that this is a futile thought exercise to even waste your time with.