Trekkies rejoice: A real warp drive in the works - other stars, here we come.

500kg sounds trivial, until you realize they mean conversion of 500kg of antimatter into energy being able to use 100% of this energy for the drive. Good luck solving that problem any time soon. You have the time though, it's going to take a really long time to make or gather 500kg of antimatter.

Then there's the problem of destroying your destination when you arrive in shower of gamma radiation.