If a superluminal—meaning faster than the speed of light—warp drive like Alcubierre's worked, it would revolutionize humanity's endeavors across the universe, allowing us, perhaps, to reach Alpha Centauri, our closest star system, in days or weeks even though it's four light years away. from A Groundbreaking Scientific Discovery Just Gave Humanity the Keys to Interstellar Travel [Popular Mechanics]

The Alcubierre Warp Drive, previously