RE: Inverted Hovering. It has been done now!
looks entirely real too me... remember I can show you a picture of a REAL brick flying... yup, up in the air, the pic just doesn't show what happened a split second after that. same thing here. as others mentioned, it is hovering inverted, at least long enough to take a pic. (which amounts to a grand total of 1/2 of a second or less!)