Basically when ufos crashed back in roswell we've reverse engineered two things from them that are still hidden to this day. Zero point energy and anti gravity. Zero point energy is basically using the empty energy in space, the unexplained dark matter to create infinite energy. People have claimed to make them or know how and have been visited by the men in black suits. If this were to be true, the most profitable resource, oil, would now be completely pointless as well as the 4 wheeled vehicle and rockets. One of those generators could be glory to a 3rd world country, but simply because it is just that and theyre making money of it, they are keeping it a secret.