Rain then Snow then Rain
In any northern township in this hemisphere, if you have a night with rain (Sully's first stop and look at Bowdin Street)then what looks like a very cold day with flurries, then another night with rain ( Sully and Peter at Bowdin Street on the way home from robbing Tip Top) then you'd end up with black ice on every road in the area, yet they never seemed to have to deal with it. I know it's a minor point, but I had my very very first wreck EVER on black ice, and have become a minor expert on the treacherous stuff, lol...
Outstanding film, none the less!