"Tesla’s is just too good."
They've hit a middle ground where it works well enough in many situations that people get too complacent, bored and let their mind wander until a couple of meters before they plow into the back end of a stopped fire truck. (Why do Tesla vehicles have a hard on for emergency vehicles?)
Another thing that people are much better at is seeing traffic far ahead slowing down or coming to a stop. Are auto nav systems going to recognize all of the brake lights ahead and start slowing down or think about getting off at the latest possible exit?