The sabotaged info point could (would?) happen anyway. There's very little into securing the CAN, and that's how you get things like [1], even without V2V communication. There are a few papers out there describing similar attacks over bluetooth as well. I'd argue the security portion will become just as important as failure mode.
[1] https://www.wired.com/2015/07/hackers-remotely-kill-jeep-hig...