Here are three aerial photos of the carparks at Meadowbank Railway station and Concord Hospital. I have not changed the scale when moving from one photo to another, so the size of the carparks is directly comparable.
The first is the railway carpark - it is in the middle of the photo just below the yellow lines.
Here is Concord Hospital and its carpark.
I tried cutting and pasting the railway carpark into the hospital carpark - with my inexact non-photoshop software tools, I found that it would go in roughly 35 times.
I am sure though that if you told the nurses to catch a train home at 2am, they'd lock you up in one of the mental wards.
Another sound reason why cars rule the planet, and those that think otherwise should visit Concord for a refill on their medication.