P. J. Mark Senior Correspondent at Inside.com Scott Kirsner Contributing Editor at "Wired" magazine It's "secret" code-name is Ginger. It's been seen by only a few people. It's a mystery invention by a well-respected, though reclusive, scientist. But what is It? No one knows for sure, but that hasn't stopped the media from massive speculation. Is it a motorized scooter, a personal transport device, a high-tech unicycle? Join Juan Williams and guests as they look at what "Ginger" may be and whether it warrants all the media hype.