In my previous job I made trips from London to Scotland every month for a period of nearly two years. This was interesting in itself but what made it really special was the fact I could travel on Scotrail's 'Caledonian Sleeper' on most occasions. I took a small digital compact with me each time and over the course of several trips managed to record the experience.
I found it hard to sleep when I fist started using the service but after a couple of trips got used to it and slept more easily. My journeys would normally involve travelling to Scotland one night, spending the next day in Glasgow, then returning the same night to Euston. Sleeping on the return journey was a lot easier!