You have to do something well to redeem that or sales will be a flop. It doesn't look like self driving cars will be much cheaper, better handling, cheaper to own or more luxurious than normal car so the only thing left is for them to drive as better than most people.
The kind of review you want is "this thing costs $10k more than a Prius but being able to sleep off a hangover on your way to work is worth every bit of that $10k"
2) Better than the worst isn't good enough because good drivers would buy them too.
Waymo was reporting 0.2 disengagements per 1000 miles last year, but people like to nit pick those because they're not all downtown miles.
For context humans have 0.006 accidents per 1000 miles driven, and that's counting all the simple miles we drive on highways. So last year Waymo was within a factor of 30 of average human performance, assuming each disengagement was an accident.
If you allow for the fact that with so few disengagements, some of this is noise, and that most of these disengagements would probably not result in accidents, but are rather drivers being cautious and the cars are probably better a year later, I'd say they're probably knocking on the door of human safety at least.
Obviously hard to really say without more data, but the data makes me bullish rather than bearish.