A driverless car is not just another car. It's not a fancy smartphone. It's a paradigm shift that will reshape society and erase tens of thousands of jobs in a relatively short timeframe. And it's one of the rare cases where you can actually predict and quantify these consequences with relatively good accuracy.
I'd assume quite a few parties (read: all of them) will want to have a say in such a rollout, beyond technical peculiarities. For the better or the worse.