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.
This is going to get so much, unspeakably worse if Trump wins the next election and succeeds in his plans to forcibly deport millions of people. Of course the law enforcement agencies will “have to” check anyone who looks like they might be an illegal migrant, based on their ethnicity. Ruining the lives of not only the migrants, but countless American citizens as well.