The passenger compartment mockups indicate there won't be enough room to sit upright. I'm sure the seats will make this comfortable for people of average stature who aren't afflicted with claustrophobia, but there will be much less room than tunnels that accommodate e.g. upright humans or subway trains.
Why worry initially about a disorder that only affects 5–7% of people. Fix the transportation problem for a large majority of people first, anyone else still has existing transportation as an option.
Comfort is proportional to room, there are plenty more than 7% of the population that would refuse to ride in a windowless box they can't even sit upright in.
Yes I expect every visible interior surface would have display capability. A popular mode would be the view outside the tube, which could be constructed from fixed external cameras, and wouldn't have to be precisely "live" anyway. Some masochists might prefer the view inside the tube, which could be prerecorded or even animated.
