Volvo and EuroRSCG 4D are running an experiential campaign called Subject60 to promote the “naughty” new Volvo S60 and to do this they are hosting 5 naughty parties in 5 European cities (Berlin, London, Paris, Milan and Madrid) over 5 days and the only way to get an invite is to find the codes. Volvo has placed 20 secret cube in naughty places around each city for bloggers to find using the LAYAR Augmented Reality browser to help physically locate them, when you’ve found a cube, it unlocks a special code and grants you and a friend access to this very exclusive party!

via digitalbuzz