ITS NOT just steering: it is often braking for say red lights, blowing thru stop signs that may be faded, snow or dirt covered, sun light in camera lens, dirty camera, or "ghost in the machine" I.E. techno glitches.
There are plenty of reasons UFSD might fail, stop for a moment and require human intervention. Collaboration mode should NOT be an option is should be READILY available at a moments notice. Having zero recourse when FSD screws up opens the flood gates to danger/lawsuits. Famous last words "FSD was in total control, I could not do ANYTHING to avoid a head on collision".
Again, safety comes first and everything fails once in awhile for a multitude of reasons or for no reason at all (ghost in the machine-refers to random strings of code behaving unpredictable). I think...... for a LOT of people (at this time) they would prefer to have an over-ride function in worse case scenario's.
I think NHTSA and Lawyers would all agree that a "fail-safe" is far better option that no option at all. Totally relying on AI/UFSD will be man kinds downfall...........insert any robot movie/self driving car episode you like (eyes glow red, flashing warning lights just prior to things going awry).
For the record: I don't have a HW4 nor do I have he latest version of FSD, I have not tested or researched chips like NVIDIA. I see the potential, theories, the need but I don't see the empirical evidence that this cannot fail, that it's safer than a human driver without the need for some sort of manual intervention.
I have yet to see the actual implementation, testing, research or any investigations. A lot of techno talk with big promises with zero in field testing. Lives are at stake and thats a huge gamble to endorse without some sort of backup in place.