FSD is way beyond AutoPilot (the free Traffic Aware Cruise Control + Lane Keep). Autopilot uses an entirely different, hand coded system from several years ago, which they haven't updated at all. FSD is a Deep Learning neutral network based system.
I haven't noticed inappropriate acceleration (i.e.: driving at something too fast), but "phantom braking" is real. I'm not sure "hallucinated" is the right term for it, since it's not an LLM, but it definitely can get tricked by shadows or bridges in certain circumstances and start slowing down.
Apologies for my novice question, does deep learning neural network give rise to hallucinated brakes and accelerations?