People have been talking about this on adlist, and I've received a bunch of mails containing the images of Ian Hart's ford Mustang concept billboards, a few mails incorrectly stating that these ads were real and running right now because that's what they read on some random adblog out there.
Not the case.
(Here are posts that don't state it's a concept only: #1, #2, #3)
On Ian's concept page he writes:
"Constructed from GE Lexan semi-transparent resin, the billboard accurately blurs the scene behind it regardless of day , weather or season"
This seems like a great idea at first glance, but you know it's impossible....