It’s pretty nifty, too. Two guys, Damien and Pierre from pleaseletusdesign, got hold of a pro to drive a car in letter-and-number-shapes. Some other guy created custom software to track the path of the car and actually turn it into a font.
This is an absolutely storming idea. Put loads of stickers on a grid on a wall and let people do what they like with ‘em. Give it a watch, it won’t take much of your time and you’ll (hopefully) be amazed (: