I live across the border from you in Sioux Falls, SD. This time of year in this part of the country everyone with half a brain is doing what you're doing. Sadly, nowadays it seems like few people do have at least half a brain! Your kit looks good. Right now all I have in my truck is an extra coat, cap and gloves along with some traction mats that have worked pretty well in the past. Next time I take a trip out of town I'll add a bit more winter supplies.
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“I'd rather have questions that cannot be answered than answers that can't be questioned.” —Richard Feynman