Had a chance to put FSD trial to the test recently. Eighty miles of city, freeway, and two lane blacktop. I tried to leave it alone to do its thing. It made many rather 'interesting' decisions. To keep a long story short, I will mention only two.
You know those people that do not know how to enter from a freeway ramp and slow down freaking everyone out? Yeah, I was that guy and got honked at. It was not really an unsafe situation, so I just let it go and observed.
Later, entering a 50mph two lane highway from a side road (left turn stop sign controlled) is when something potentially fatal occurred. Traffic was busy and the car waited patiently for an opening. The opening came and the car pulled out then stopped in the middle of the road having some sort of anxiety attack. The steering wheel jiggled back and forth as I watched a vehicle approaching me at 50+. I was not about to wait and see what happens so I hit the throttle and finished the maneuver myself.
Other dicey areas seemed to be handled quite well overall but would not have been dicey with a little earlier lane positioning. Thanks to Tesla for giving me this opportunity. It has really confirmed my initial choice not to get FSD. It's an interesting novelty though still not ready for prime time IMHO. It really needs a very attentive babysitter. Maybe I would feel less tense with it over time but I am much safer driving myself. I had some fun with it though and lived to tell the tale.