Sadly not entirely hypothetical. I was reminded of this by the 'bikes on the line' incident yesterday. Say there's something goes badly wrong with the line you're travelling on, you have a bike with you (as it's necessary for that particular commute) and your train terminates due to line problems ahead. The obvious answer is "ride it", but if we're talking long distances, in the evening, on unlit roads, that's not always possible. Buses come to pick up the passengers, and a few (going to odd destinations) get sent away in taxis. You can't use either. The station staff keep saying "we haven't forgotten about you" as you wait. Eventually, though, they do, and they disappear. There are now no trains, no staff and no buses. This happened to me a couple of months ago. Eventually, I had to phone my wife (after she finished work) to drive up to meet me. The bike won't go in the car, so I had to leave it overnight outside the station (something I'd never do with this bike) and pay to return the next day. The question is... what, if anything, should have happened?