George Lucas tells Newsweek that 3D versions of the "Star Wars" films are a while off it seems.

Lucas says "We worked on some, with a company that was developing the technology a few years ago to convert films into 3-D, we worked with them. But the system works great. It's just not very practical."

Despite the setbacks, he seems set to continue with it - "What we've been working on since then is to develop a sort of practical way to do it. And we will get there. It's just a technological challenge."