Jordan Kushins 04.04.13 8:33 AM Ruben van der Vleuten wanted to see what happened behind the scenes at the post office—so he outfitted a cardboard box with a (semi-legal?) camera and documented the trek. Newsletter Get the latest Fast Company stories delivered to your inbox daily. Send I'd also like to receive special Fast Company offers ARE YOU REGISTERED TO VOTE? Register now to make sure you have a voice in the election.