Ever seen one of these? Any idea what it’s for!? Of course not, no one knows what these things are for.
Any reasonable human being can assume it has something to do with electricity based on the sticker of the little stick figure on the front of it getting fried, but beyond that we tend to just chalk it up to some necessary government box. Well, now you can be the smartest person in the car when you tell your friends some little known facts about the distribution transformer that you just drove by on the side of the street.