It was a really interesting theory, and it was backed up with some good science theory. Man, I can't remember where I heard/read it.

This is going to be wrong, because I can't remember it exactly, but it will give you the 'idea'. If you are still interested, I'll spend some time trying to find where I found it. It might have be Dr. LaViolette's thoughts.

They don't actually 'move' as we know it. The do small spacial jumps. They create a wormhole directly in front of it, and they go from one tiny wormhole to the next, jumping from one going through the tiny wormhole, and exiting a very short distance away. Short enough to make it appear as if it is moving normally. It is the same way as they would travel very far distances.

Now, wormhole is completely the wrong term, but it lets you visualize the idea.

Dammit, lol. Now I want to look into this again.

They create holes in space/time. But, its not really a hole. It is more of a slipping between reality. It can be pretty accurately explained (in theory of course) using electromagnetism. One of the problems posed was the amount of energy needing to be used is tremendous. But, that was solved by solving the 'free energy' problem.

As you can see, it solves a lot of the 'physics' problems as well. They would always be standing still. No G forces, etc.