yep know what you mean but they have a habit of just being able to turn up when u least expect it. It is the energy source for propulsion that intrigues me...they use the mechanics of a good ol fashioned american twister in controlled fashion...nothing more than manipulation of air pressure by electrostatics more like an electronic helicopter. We could utilise the same for electricity generqation but i think i would be killed if i opened my mouth and i am deadly serious.
