doing some rough "how big is this anyway" sci-fi space maths: displacement drives in Alien actually do about the same kinds of speed that supercruise in Elite Dangerous does.
got hypersleep rather than jump drives though, that's a lot of subjective time on your hands otherwise
anyway the reason I was figuring this out was because I'm running an Alien RPG game and wanted to know how long travel within a solar system would take (negligible to one 8 hour shift)
