I rent cars often for work travel, and some cars these days won't let you turn on cruise control if your seatbelt isn't fastened. The vehicle will literally jerk the steering wheel to one side or the other if IT decides that you're "too close" to the edge of the lane, even when you're veering over to turn or are just changing lanes. It will tap (or slam) on the brakes if it decides that something is ahead of you (and in one instance, the item ahead of me was the shadow of an overpass. In all of those cases, the sudden movements could easily lead to seriously bad results. When hydroplaning, if any of those occur, you're likely going to spin out and meet a wall or go off the road.
(I will admit that once, the sudden brake tap likely did save me from a bad day and an insurance claim, because I was approaching the truck ahead of me too quickly, and it was braking. Also, the lane sensor thing won't go snap the wheel when changing lanes if your turn signal is on.)
I'm Old School, and ANYTHING that takes away my control of the vehicle that I'm driving is just a horrible horrible idea. SOME vehicles allow you to turn these "features" off, but I think that most do not (or at least I couldn't figure out how to do so, in the week or two that I had that car).
And don't get me started on OnStar and other ways to turn off or disable a vehicle remotely... and how THAT could be horribly misused by evil people or stupid kids.
Just imagine where things are going to be in 10, 20 and 30 years! AI chips will be cheap and ubiquitous. They will be embedded in many auto systems. Already today, the average car has 25–50 CPUs controlling core systems like fuel injection, stability, and sensors.
Luxury or high-end vehicles have up to 100–150 CPUs, including those for entertainment, navigation, and semi-autonomous driving features.