Nobody talks because there is nothing new here. Today's cars *need* electronic devices to control braking, motor speed, and so on. Sure, there are fallback, but actualy almost nobody would be able to keep his/her car safe would all electronic devices stop to work ok.
I'm inclined to agree with you about electronics upgrades for cars. I recencly got a new pickup and one of my concerns is that the electronics is likely to "die" much sooner than the mechanical. I kept my last vechicle for 16 years and would really like to be able to keep this one a similar length of time...
With so much electronics under hood today, you could do that on today's vechicle as well. But I don't think people will bother doing that. It is much easier to acquire real gun than EMP gun in US. And real gun is much more effective if someone determines to kill. And it works regardless you are on vechicle or not.
My point is that Autonomous vechicle is not really making situation worser than what we have today.
I recently decided to sell back my 2014 "Dieselgate" Passat SLE. I really liked the car but the audio system (which includes the backup camera) was underpowered for all it was tasked to do and VW won't let folks upgrade systems to newer variants. The new car (without diesel) is also a Passat SLE but has all the blind spot, adaptive cruise, park assist, Apple Play, etc.features that high end cars have. Also the backup camera is on "instantly" whereas in the older car it usually came up just as I finished backing up.
The auto companies have upgraded to be able to sell us cars that will easily last 200K miles with excellent mileage. It would be nice to be able to upgrade our cars with new electronics (e.g., a new GPU card and software) and to have those upgrades integrated, verified and supported by the OEM versus the current third party upgrades we can buy now. Upgrades could be at good margin and be tied to other services. This could help get the installed base of vehicles to higher levels of safe driving support much sooner than we can expect with the current situation where new electronics only come with a new car.