Waymo granted permit to begin testing in New York City

It's fascinating seeing all the comments elsewhere anytime Waymo starts testing in another city along the lines of, "ah, but how will they handle X, Y, and Z here?? Checkmate, robots!" despite having already launched service in several other cities.

Granted, NYC is the biggest city in the US, so maybe that sort of reaction is more reasonable there than when people in Dallas or Boston do it.

>despite having already launched service in several other cities.

Why does having launched in other cities matter if the new city brings up things that none of the other launched cities do?

For example the first thing I can think of new for New York is snow and ice.

It's my understanding that self-driving cars don't really account their acceleration and braking for roads that could sometimes be very slippery due to snow and ice.