Ah...I see his team has already figured out how their coming back, that is awesome. Silly me, I was under the impression that SpaceX would use the Falcon9 booster somehow to re-dock with Dragon and land the reunited craft back on Earth.
They still haven't found a way around the extreme temperatures of re-entry, eh?
A craft would have to have a limitless supply of power to accomplish that and I don't mean nuclear or combustible. It would be on the order of controlling mass/gravity through electro-magnetism and using the magnetic fields of Spaceship-Earth.
Which presents a problem with Bodies of the Universe that have no magnetic fields. When recognized that they don't you may have to resort to some type of fusion impulse engine or thruster.
Have you ever had the feeling that you were born too early in the timeline of Human existence or too late?