Visualization of hyperloop between Florida and Hong Kong, and some of the hollow earth visuals, https://news.ycombinator.com/item?id=39722705. Rest of the movie was less memorable :) The storyline of Apple TV's Monarch: Legacy of Monsters is more engaging. A few good visuals as well, but it doesn't have a movie budget. Moonfall has a good interior visualization of "hollow moon" spaceship at the end, but is otherwise forgettable. Mind-bending images of fictional "under space" and "inner space", respectively.