While you’re driving down the highway, the hacker behind you will pull your car over and take your car at gunpoint . . . or simply run your car off the road for fun.
No mechanical connection between basic controls and you. All sensors and actuators. Now they want vehicles connected to the internet. What could go wrong?
https://en.wikipedia.org/wiki/Drive_by_wire#Uses_in_passenger_cars
I think I prefer a steering column connected to steering components. A brake pedal connected to the master cylinder. A gas pedal connected to the throttle.