It was given to me while I was walking through the Pit Area at the Daytona 500 several years ago.   I passed by the #14 Pits and I was wearing a Tony Stewart T-Shirt.  One of the Pit Crew Team Members tossed it to me.  Not a scratch on it.

I'm not exactly sure what it is or were it goes but these words are stamped on the back.....

*  Do Not Install HoodWear While Engine Is Running, and 

*  Only Mount One HoodWare to the GrillFace at a Time

It measures 8 1/2 by 5 1/2 inches, and does show wear or usage on the back.  The is a magnet built into the back bracket.

I can't find another one listed anywhere