I'm a bit late on this one- I've seen this up at Westerpark a few times but I never had my camera with me. This urban knitting project was done by BreiWerkWest. I really like the whole urban knitting graffiti movement- it's such a funny twist on knitting. And such a nice surprise when you see it.
Check out this video if you'd like to see one of the bigger artists in the scene knitting up a bus.