On behalf of its client 3M, a Canadian advertising agency has created a 3 dimensional bus shelter billboard to promote a new security glass product.

The billboard construction, which is made of the very same material that it promotes, is transparent and contains what appears to be real money up for grabs to anyone who can break the glass.

The billboard was only up for a day and half and was strategically placed in front of the agency's own office, closely monitored by security guards across the street - just in case the publicity stunt would get out of hand...

• via adcritic