For this to work, either (1) the network has to be reliable, and all cars have to be trustworthy (both from a security and fault tolerance perspective), or (2) the cars have to be safe even when disconnected from the network, such as during an evacuation.
We already know for sure that we can’t solve (1), which means we have to solve (2). Therefore, car-to-car communication is, at best, a value add, not the enabling technology.
We already know for sure that we can’t solve (1), which means we have to solve (2). Therefore, car-to-car communication is, at best, a value add, not the enabling technology.