IIRC, the train station they arrive at is the same station Zack arrives at in Crisis Core, which is a passenger station, where you can take a passenger train to the sector 5 slums. When Cloud & Co arrive at the platform, there is nobody ON the platform except for guards. As far as we can tell from that very brief trailer, there are no civilians at the train station at all, but it's possible that when we have the full game, we'll bump into some NPCs there, who knows. Or are you trying to say that it's totally possible the Sector 1 train station is teeming with commuters seeking an express service to Sector 8 at 1 o'clock in the morning?
I don't really know what your point is, X. I said the fact that they have an express train from one sector to the sector next door shows us just how big this city is supposed to be, and you seem to be disagreeing with me, and I don't really know why. The express transport on the London transport map you've posted shows express routes out of London to Heathrow. The Bakerloo line from Waterloo to Paddington is not an "express" line, it's just a regular underground line. If the distance between the sector 1 station and the sector 8 station was the distance from Victoria to Heathrow, then it would a) make sense for them to have an express line, and b) mean that Midgar is pretty bloody enormous. Like, the size of London practically. Which is the point I was trying to make.