[hexagonc]

To be honest, I'd be worried about security vulnerabilities from a system that was exchanging and synchronizing data in the cloud. It seems unlikely that the first generation of self driving vehicles will be able to update its behavior in real time from other vehicles' experience. If there is any cloud connectivity at all, I'd expect it at first to be solely outgoing data that is sent to and aggregated by some central brain. Then, when the owner of a vehicle wants to update its AI, they manually download a certified patch or bundle of data that incorporates what the central brain has learned from all the cars. These upgrade patches would probably have to be constantly vouched for by debug vehicles that drive all over the streets of the world before being released.