Before entering Tesla's Fremont factory for a tour, a non-disclosure agreement is signed. This means that some of what is seen within the factory cannot be discussed with others.
However, there is non-confidential info that can be shared and that's what we get in this here video produced by Michael Brown on YouTube.
"Outside video and commentary about what I saw during a tour of the Tesla factory on September 10, 2015."
Brown does manage to catch a glimpse of a production Tesla Model X and, in doing so, becomes one of only a few people outside of Tesla to have seen the finished X.