I'm just thinking about the level of coordination required and then you get into timings, and other issues where one car may respond slightly slower. I think stuff like this makes it way harder than people think. And that's without any bad or just not altruistic actors there. Think if the "Sport" package on your BMW was code for "talks the other cars into letting it go first.

With peoples car, the person with the complete clunker wins that race as they obviously don't care if they hit you and don't have the money to pay you back. BMW has to back off.

With software it's down to the negotiating powers of the cars software.

We've seen how well that works in trading, no one ever games the laws slightly for their own advantage.