3M Security Glass advertising ad campaign

THIS IS PSYCHO!!!!! 3M developed some security glass that is supposedly bullet proof etc etc, so they put there money where their mouth is and stuffed a whole lot of real bills behind the security glass and used it as bus stop advertisement. I’m sure all sorts of hooligans took all sorts of pain to the glass with no luck. I’m just wondering how much money is inside.  This is definitely really cool, hope this doesn’t turn out to be a hoax. (via: my gf’s blog)