The 2001 spinning space station plan seems quite difficult. Establishing regular BFR/BFS service to Mars might be easier. A couple of years ago Marko Krco made some interesting observations on the physics of a similar design proposal, also rotating at about 1 rpm.
Why doesn't NASA build rotating spacecraft to simulate gravity? (Intermediate) - Curious About Astronomy? Ask an Astronomer
Some quirky stuff thrown into these videos. Not sure how Denver airport cost overruns can be used to predict the budget for BFR/BFS. Most entertaining was the Chris Hadfield barf bag demo. I guess if you're building a space station you'd better be prepared! I'll give credit to that eye catching stage prop for the YouTube crowd.....the Gateway guy standing next to his 1:72 scale, five foot tall Saturn V produced by Dragon Models. He cheated a couple of ways. Unless he's really short his rocket is elevated to look taller. He also didn't build it. I have one too, just stack the stages and you're fully assembled, purchased a few years ago for around 200 bucks. Alas, he may find building a real spaceport slightly more elusive.