I just saw one two days ago about a mile from my house in Green Bay, WI in front of a grocery store. My friends and I weren't sure if what we were seeing was right from the road but we went up to it and started laughing our asses off. I didn't know only 400 were being put out until I read this thread...so in a small way...I feel special.
Unfortunately, either someone stole it or the USPS took the covering off cuz it's back to normal as of today.