When is an underground airport train station, not an airport train station?
When its built at just under 1 Km from the nearest terminal...T3 / T4.
Imagine hauling baggage that far....
1 - In Summer when its 40C in the waterbag, or
2 - In Winter its cold and raining.....
And further, ALL of the roads into and out of YPPH will now be routed by the one highway entrance, Tonkin Hwy.
One breakdown / accident and that will spell 'rooted'.
Oh Dear........
Cheers
And yes Cap'n, you may well be departing 'half full' one day, as your pax are still on the h'way.
Similar has happened before.......