but I doubt they roll out Robotaxi's in bad weather areas for some time, but there are plenty of areas that would work.
FSD took me from the Marriott Center, up Provo Canyon to Midway during a snow storm and did very well (zero interventions). It "saw" the road clearly, even though it was covered with snow. But I agree, it is going to be a challenge for consistency.
It will be very interesting to follow.