"at superluminal speed, the interior of the warp bubble is causally disconnected from its surface and the exterior region, which means the photons cannot pass from the inside to the outside of the bubble and so there is no way of controlling the space warp in order to, start, stop or steer it. And the starship passengers will have no way of seeing where they are going." p. 488 Eric Davis who works with Hal Puthoff in Frontiers of Propulsion Science.
Here is where paranormal remote viewing signal nonlocality may come to the rescue - smashing the wall of light so to speak. Post-quantum entanglement signals, violating orthodox quantum theory of course, are not limited to timelike and null geodesic paths.