It hasn't even been independently tested, and the local university professors were quoted as saying that if it indeed worked, they'd have to rewrite the laws of physics. It's obviously a sham.
We're launching rockets outside of our solar system, shooting meteors for fun, smashing particles at speeds near the speed of light, playing with antimatter and esoteric particles... yet two nobodies from nowhere (no offense to 'em or anything) make a little generator in their garage and thing they can rewrite the laws of physics? I mean, c'mon... lol.
Existing technology that has the potential to change stuff will come from research labs and universities with millions -- if not billions -- of dollars of funding and endowments. The days of making new discoveries in one's basement are long gone, unfortunetly.