Every fitment will have been space- and weight-optimized, for obvious reasons, so you're already squeezed in that bit tighter than you might be in most other fo

Every fitment will have been space- and weight-optimized, for obvious reasons, so you're already squeezed in that bit tighter than you might be in most other forms of public transport. Air pressure is also lower than normal, and you're going to be sat there for longer than usual... it all adds up, I figure.