@wiredog
For this attack to work no one else on the road can notice the drones following the car being attacked.
You seem to lack the ability to generalize and reconceptualize threats like this. Just because the study used a drone doesn't mean it's the only way to project said image. It could be any other nearby car on the road. It could be something set up alongside the road. In fact, it could be the car itself that is modified to do this. Imagine a driver who wants to be able to go faster than the limit that's posted on real signs. Now imagine someone hacking that setup, too.
@Solaric
It's not self-driving car thing, at all.
It most certainly is when the vehicles perceive and act on inputs that human drivers do not. The open-world aspect of the problem makes it very dangerous to try automating a task like driving. It very much matters what the edge conditions are that can alter the safe behavior of any driver.
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