At the end of Star Trek: The Motion Picture, after Decker and Ilia "join" together somehow, is it stated what happens to them afterwards or the 300million km long ship? Was there any crew ?
It is not stated in the film; they simply leave, after first subjecting the audience to a poorly-executed attempt to duplicate the flashing lights scene in 2001: A Space Odyssey (Paramount actually sued the original special effects company for TMP, I believe, over the poor quality of their effects).
In the screenplay (published in Star Trek: Phase II), however, it is explicitly stated that V'Ger, newly improved by joining with Decker, passes through an inter-dimensional portal to continue its mission to "know everything." I am unsure as to why that was not filmed; possibly due to the aforementioned special effects issues, possibly due to expense, possibly due to the film already taking too long to shoot.
I think this bit of dialogue pretty strongly suggested that V'Ger needed to join with a human so it could depart our universe for "other dimensions, higher levels of being":
SPOCK: Perhaps not. Captain, V'Ger must evolve. Its knowledge has reached the limits of this universe and it must evolve. What it requires of its God, Doctor is the answer to its question, 'Is there nothing more?'
McCOY: What more is there than the universe, Spock?
DECKER: Other dimensions, higher levels of beings.
SPOCK: The existence of which cannot be proved logically, therefore V'Ger is incapable of believing in them.
KIRK: What V'Ger needs in order to evolve is a human quality. Our capacity to leap beyond logic.
DECKER: And joining with its Creator might accomplish that.
The shooting script for Star Trek : The Motion Picture (as written by Gene Roddenberry & Harold Livingstone) makes it pretty clear that at the end of the film, V'Ger has travelled into another dimension;
Kirk, Spock and McCoy stand transfixed another instant. Around them, V'ger seems to be TRANSFORMING INTO BRILLIANT, LOVELY PATTERNS. They all turn and race into the complex in the direction of their vessel.
EXT. EARTH ORBIT - AN ENERGY BOLTS : It too seems to be flowering into loveliness, brilliant, graceful patterns as they seem to slip through to another dimension, vanishing.
EXT. V'GER - FULL SHOT : The "FLOWERING" EFFECT now spreading outward, V'ger's massive shape becoming a spiraling pattern of twisting, graceful shapes and brilliant colors - a transcendence into another dimension.
And then all of that is left is a shimmering, jewel-like point of light -- and then it too fades -- and reveals there in the blue-black of space, the U.S.S. Enterprise
I think McCoy states after joining with the Sagan et al. designed NASA satellite, V'GER, and Commander Will Decker is that they just witnessed a new species being born.
I guess this new species is half-man half-machine and the result of evolution. Although, most species evolve at a much slower rate instead of deciding to meld with each other as in this awesome Star Trek motion picture movie.
Also, it would of been better if Shatner's hair did not look like that guy's from Dynasty. :D
It was also funny that V'GER only 'spoke' in binary, zeros and ones, and that the Star Trek team had a tough time communicating in this type of machine language since their technology had advanced way past this. I guess they could not have used Java, or whatever language will be used 260 years from now, to interface with the machine code of V'GER.
I really liked this movie. It was long, but had a massive amount of fascinating eye-candy to look at. The scene where Spock floats through the interior of the alien craft is amazing with the blue trailing lights. I did not know they were sued by the makers of 2001:A Space Odyssey for that scene. It was also very quirky that the leading lady, the main sex symbol, had a shaved head.