I've wondered the same thing about FSD in Canada.
Often we Canadians drive on roads where we cant see the lines due to snow/ice. We sort of form our own "lanes" based on where we think the lines SHOULD be.
How would a FSD Tesla handle a situation where everything is white?
Even Humans who are use to these conditions still fail: https://ottawa.ctvnews.ca/opp-responds-to-numerous-crashes-o...