I mean, current Tesla cars also don't do anything that could really be called autonomous driving either.
The idea of low latency vehicle-to-vehicle communications being necessary for true large-scale autonomous driving is not exactly a new concept. "Internet of Vehicles" type concepts, IMO, are really going to be mandatory to fully realize the promise of high-density autonomous vehicles. Too much can (and will) go wrong when you have hundreds or thousands of individual nodes making decisions without communication and context.
For all those people who find it more convenient to bother you with their question rather than to Google it for themselves.
lmgtfy.app