It's pretty cool. Note how RB installed a liner inside the IL-76. The interior doesn't look as spacey/modern as what you see in the clip. The experience is pretty cool. I did it some 15 years ago. We were scheduled for ten parabolas but stopped after seven as one of us tourists lost all his vital signs. You can see it briefly towards the end of the clip: The front part of the plane is the station for the flight engineers and the doctors.