The benign name conceals an idea that borders on sheer insanity - or, actually, is well beyond that border. Interstellar travel is limited by the speed of light. Even if you could somehow breach it, it could create a causality paradox - you would basically be travelling back in time.
The Hyperjump utilizes the uncertainty principle. Any material object is a quantum wave, and it is impossible to pinpoint its exact speed and position at the same time. The drive spirits the ship away from the observable universe, therefore making its position uncertain. Then the ship can reappear anywhere. The insane part is, it is impossible to tell where and when exactly it will reappear, and how much time it will take. Only if no observer of both its departure and arrival exists, can the ship reappear without creating a time paradox. Thus the longer distance one travels, the more predictable it is. So WHERE are you, when you're... not here? It is commonly described as a 'dream world', where notions of time and space become uncertain.