Is it the cold?

Wouldn't you think that on a 36 mile drive, just at random there would be the occasional moment when there wasn't somebody in front of you poking along and holding up traffic? Usually that's true, but I could swear that just this week it seems to have all changed for some unaccountable reason. And it wasn't just on the road; there was an apparently confused pickup truck wandering about in my path in the parking garage, for heavens sake! You know, it is a little colder this week. Do you suppose that cars are like little molecules that slow down when it's colder? Well, I guess the phony scientific angle is as good an explanation as any.