Here are some other examples of interactive outdoor marketing.
The good and cheeky one, sending nice bespoke messages – Virgin Trains

image from http://community.brandrepublic.com/photos/virgintrainsgiant/default.aspx
Virgin Trains have created a giant talking poster outside of Liverpool station and writes bespoke messages to everyone walking or driving past. A giant cursor points to the person/vechicle in question and all of the messages promote Virgin Trains. Cute and sweet.
The bad and cheeky one, shaming you to go to the gym – Fitness First

image from http://gizmodo.com/5169348/bus-ad-shames-you-into-joining-a-gym-by-showing-everyone-your-weight
It’s a bus ad for Fitness First in Rotterdam. You sit down on the bench cause you’re tired, want to rest your legs. But, the bench holds a scale and it shares your weight with everyone walking past. How rude! Definitely doesn’t make me regret swapping to VirginĀ Active.