^ I don't expect some mad scientist to invent it in his garage, I don't expect it to be invented anytime in the foreseeable future if ti is possibly. Warp Drive is something at the theoretical stage, some idea physicists toy with on their lunch breaks, but their day jobs don't include building one. We haven't even got artificial gravity, and before we can build warp drive, we need to figure out a way to generate gravity, or create degenerate matter, we need to protect spaceships from the tidal forces created, so warp drive is at the chalkboard stage, much like string theory and other stuff like that. For real world physics, I'd stick with reaction drives, nuclear power plants, Einstein and Newton.