Bad weather & bad visibility, most of the self driving solutions to date just hand back control to a human driver. In other words, hand back control at the last possible second in the most difficult driving to a human who has been in an otherwise relaxed and lest alert state. Winning!
It's like if spell check only worked on words shorter than 6 letters.
This is wrong, only the shittiest self driving in name only systems have that behavior. Any real attempts at it (i.e. not Tesla or comma) do not expect or require a human takeover immediately. For example, Cruise and waymo don't even have humans to take over, MB has a 10 second warning (and actually the human doesn't even need to takeover at that point, the system will slowly bring the car to a stop).
Well as we see Cruise's solution is to stop dead in the middle of the street until a service team comes out to resolve. If there was a human driver they would be handing back control.
Probably pretty fun if you happen to be a passenger when this happens.
It's like if spell check only worked on words shorter than 6 letters.