Successful enough for me and many other people I know. End to end from my house to grocery store, kids schools, friends houses, etc. Multiple times per day for the past year.
It’s not perfect but I’d consider it a smashing success for something I rely on for safely transporting my family every day.
I wouldn't feel safe in one. I've seen how they drive, and I've had a brief shot of a car with FSD.
They are not safe and they will never be safe.