Watch the video - it's quite fascinating. I wouldn't lust after it too much though unless (a) you can find one and (b) can afford the asking price (between $60k and $160k!)
@pixiemac - It'll fit. Nikon has a little more distance between the lens mount and the sensor than canon, so you can throw a relatively cheap Nikon F to Canon EF adapter and you can mount most Nikon lenses and still keep infinity focus. People do it all the time. https://www.google.com/search?q=nikon+lens+on+canon+camera&tbm=isch
https://www.google.com/search?q=nikon+lens+on+canon+camera&tbm=isch
Now what's your excuse? :-p