Tunnels looked wide enough to get out and walk thru. They’ll need ventilation and will probably get maint / esc hatches for regs. Dunno about ADA. Didn’t seem like a detail worth hashing out in a debut tho.
True, lots of info yet disclosed & some impt questions raised. Seems like an Elon intro where it’s vision first and then lots of details sorted out later and/or changed last minute (lookin at you BFR).