A clever new window display at one of the New York City Apple stores (and perhaps elsewhere) appears to show a MacBook Air hanging from a helium balloon with the tagline "so light, it floats." While the ballon is of course suspended by thin clear wires, the illusion has been effective at fooling at least some commenters on YouTube, where the standard-definition version of a video of the display (below), shot by Courtney Boyd Myers of The Next Web makes it difficult to see the suspending wires.
