Nobody will ever figure out how to defy the laws of physics.
Until someone does, and then they will re-write the physics text books.
We need to figure out how to marry electromagnetism and gravity, then stardrives theoretically become possible...
And you know that thousands of smart people around the planet are working on doing that very thing. I also don't doubt that every major government has deep black programs that are hard at work on solving this, as well.
Someone's going to get there first. I just hope it's the good guys.