It could still be helpful, however. If your car gets a signal that there are an unusual amount of cars stopped half a mile ahead of it, it might be able to dedu

It could still be helpful, however. If your car gets a signal that there are an unusual amount of cars stopped half a mile ahead of it, it might be able to deduce that there has been an accident or something else stopping traffic and navigate away before it becomes an issue. Sort of like an automatic version of Waze