Hi, I just watched this movie yesterday, there were a couple of things that hinted me on that maybe the movie was referencing to a DMT trip.

first, the "don't panic" cover part
then, there's this scene, where they're on a small wagon blasting of through a tunnel, then they pierce some sort of veil and end up in the factory where they make planets ("fabric of the universe"?)

anyway, thought I'd share and see what you guys think about it