US20140009098A1 - Interacting complex electric fields and static electric fields to effect motion - Google Patents this guy seems to have figured it out. a few others have verified it. implementation is the hard part here. the part about the isolated voltages is a big deal, I have seen the lack of it it in many failed attempts to reproduce something
so, I think this idea might be the solution to the implementation of the idea in the post abouve FREEL TECH - The Vacuum Capacitor you can get huge isolated charges in a very small space. and if nothing else, it looks like they might replace lithium batteries.