If you really dig into this you find that “exotic matter” is required to make it work. en.wikipedia.org

“Exotic Matter” is something that is shown in the math, but has never been observed. In this case the form they are talking about here is “Negative Matter.” Negative Matter, as opposed to Anti-matter, simply cancels out what we view as normal matter. Whereas the interaction of Anti-matter with normal matter creates a HUGE release of energy, Negative matter simply produces NOTHING.

I think the thing that gets people excited here (at least for me) is that we can clearly see the Universe is expanding. We can see that EVERYTHING that is not nearby (that is nearby galaxies) is moving away from us. Space is EXPANDING. The further away things are, the faster they are moving away from us. In fact they are moving away from us FASTER THAN LIGHT can travel according to the red-shift we observe. Therefore, at some point things will start disappearing from our horizon. So we can see that space is getting bigger everywhere, the Warp Drive thing is make space in front of us contract, and space behind us expand, and you have FTL without violating Special Relativity. Even cooler, it would be a Reactionless drive! Turn it on, and you move, turn it off and you instantly STOP moving. No Newtonian laws to deal with! Sci-Fi realized in reality! The bummer is that we have NO idea what Negative Matter is, or if it even exists for real.

I can’t find the youtube video right now of the expanding Universe thing and it being such a sever Red Shift it appears to be moving at FTL. I thought it was a One Minute Physics episode, but I don’t see it right now. Maybe it was a Vsauce video the guys collaborated on.