I once had a training class with out-of-town trainees staying in a nearby hotel; one of them told me this story at lunch.
It had snowed heavily over night, though nothing like what we got last week, maybe five or six inches, so the highway department had been able to keep the roads passable. This trainee was deputized to drive the carpool of the rest of the visitors from the hotel to the training site, since, being from Chicago, he “would know how to drive in the snow.”
He’s driving carefully along when one of his passengers asks, “Why are you going so slow?”
He replied, trying not to let his exasperation show, “Because that’s how you drive in the snow.”