If he's right, it would be at least, a step in the right direction....
| In 2012, physicist Harold White and collaborators announced that modifying the geometry of exotic matter could reduce the mass–energy requirements for a macroscopic space ship from the equivalent of the planet Jupiter to that of the Voyager 1 spacecraft (~700 kg)[5] or less,[19] and stated their intent to perform small-scale experiments in constructing warp fields.[5] White proposed changing the shape of the warp bubble from a sphere to a doughnut shape.[20][21] Furthermore, if the intensity of the space warp can be oscillated over time, the energy required is reduced even more.[5] According to White, a modified Michelson-Morley interferometer could test the idea: one of the legs of the interferometer would appear to be a slightly different length when the test devices were energised.[19]
"and in particular a ring around it that is key to its propulsion system — in a way that he believes will greatly reduce the energy requirements" http://www.nytimes.com/2013/07/23/science/faster-than-the-sp...