A 100-car-pile up in Fort Worth, TX resulted in at least five fatalities and multiple injuries due to icy road conditions. A heroic moment from the rescue efforts for the accident came when a firefighter rescued a dog that was trapped inside of a vehicle involved in the accident.
Well, it's pretty simple. We aren't used to it. Down south we rarely see temperatures like this. (which is why you're SOOOOOO cold today) And since we don't see temperatures like this too often, we also don't exactly know how to act in it ... or drive in it.