Given that the exact same question is the current top post but for driving instead of transit, I feel this question was needed.
My answer: I saw some guys hooking up a Raclette Grill to the outlet in an otherwise empty German intercity rail waggon. They had it unpacked in one of these 4 person seats with a small table. No idea if that could work or if draws too much power from the board net. I just headed on to the next waggon.
I remember on our bus ride to school we passed an old store that had, spray painted on the side, “Forgive them, Lord, for they know not what they do.”
Months went by and I’d ponder that a bit when we passed it, until someone updated the old quote.
“Forgive them, Lord, for they know not what they doo-doo.”