I'm 59 years old and have a flawless driving record. I might make mistakes, but they're my mistakes and none have resulted in a ticket or accident. There's no way I'd hand over the wheel and pedals.
I know when I'm not competent. I don't know what flaws might make the system incompetent. I trust my computers to do a lot of things, but there are controlled variables that I understand. The streets and highways are a totally different animal. I can generally predict and avoid someone who does something unexpected. I'm not sure an autonomous vehicle can.