We already have that thing in Europe - it's called night trains. Depart in the evening instead of taking a screamingly early morning flight, have some food and nice vistas in the restaurant, work a bit in your room. Arrive in the city center next morning. No hotel cost.
I like it at least. Granted, I can work from my laptop so I can travel a bit longer than strict overnight without losing "efficiency", but I've been traveling this way when I have had some business or vacation in continental Europe (middle Sweden to Paris, Amsterdam, Italy, southern Spain