Sensationalist bs. It'd take some pretty impressive programming to deal with issues like road construction, missing or faded road markings, unmarked dirt roads, and potentially outdated or incorrect maps.
I don't think we'll go straight from total human control to total automation directly. I imagine that the first versions of automated cars will require some supervision and only work in certain conditions. This will likely require some sort of system to detect the driver is paying attention, like steering wheel sensors, to prevent people from just going to sleep.
The first versions of automated cars already exist. Mercedes, BMW, and Audi have versions of their cars that maintain a safe distance from the cars in front of you. Mercedes also has a system which will automatically steer the car to keep it in a lane for you. Prius and Lexus have cars that'll automatically parallel park themselves.
I don't think those are programmed into the driving software as much as it has learned them through machine learning. Most of these systems have gone through the equivalent of millions of years of humans driving so I'd trust it over a human driver any day.
What do you mean by electron-based signal transmission technology? If you're talking remote control, those signals will be photon based. If you're talking internal control, electrons on wires move pretty fast and many cars already utilize them. Is there much latency difference between mechanically closing the throttle with your foot and signaling a servo to close the throttle? Presumably some situations can be analyzed by a processor and trigger the servo before the human controller has even been able to consciously perceive a scene.
How do you plan to remote control a moving car with photons?
Edit: Huh, ok. I didn't know radio signals are also photons. Still, the speed of light is significant with sub-second decisions. So even for photon transmission remote control of a moving car in live traffic is not feasible.
Drone pilots can have several seconds of latency. This means remote operators are useless as a backup to the machine if a split second reaction is required.