Sing for me, and press the button! – Video of the day

A Coca-Cola vending machine was placed at the Royal Institute of Technology in Stockholm. Instead of a logo on the front, the machine said “Sing for me.” When a person sang a short Christmas carol, the machine dispensed a free Coke.

http://www.youtube.com/watch?feature=player_embedded&v=CJeYs8zuXgc