Have a look at this Free Energy Generator Head Scratcher. It is obviously a hoax but how was it done? My bet is there is a battery in the meter and a battery in the motor. This way when the leads are shorted out the meter reads the internal battery voltage and when the motor leads are shorted it connects the small battery to the motor. I was thinking that if there was a large enough overhead power lines this might have some possibility but the Mythbusters did there experiments on this and based on their results this coil would not do anything… Any thoughts?