It's the electric washer system. Was part of an option package.
Re the tags, did the assembly workers put it on the car or was that part of the dealerships "prep work"? Or did the assembly line workers just threw it into the glove compartment?
I'll stand to be corrected on this, but my guess is that if the tag were adhesive backed, it would have/could have been installed by the assembly plant. If it were mechanically attached (wire tire or slotted cutout to fit over a mating part), it could have gone either way. I'd venture to say that these sorts of tags would have been bundled together for the dealership pre-delivery people to install.