They demonstrate these "green plug" things with a regulatr utility meter. On an unloaded fractional HP motor the speed of the meter wheel changes significantly.
No offense, but I can lose 100 pounds of ugly fat by just taking a pill, too. The dangers of Y2K are still lurking (right next to the Killer Bees), and Ted Kennedy has my best interests at heart.
I'm not one to say something just can't happen, but I rank the "green box" right up there with all the others. I can't help but believe that the "regular utility meter" has been "significantly" tampered with.