For me, the best part here is the subject - what an idea - art in vending machines... an intriguing metaphor - for instance, is PRX a radio vending machine? Why not - and it too renders something deserving more accessible. The style of this piece is very traditional "track and ac" -but it's well-tracked and well-ac'd. The interviews do their job by making you see the objects, and the situation - and holding your interest.