Great video GrahamI've done similar journey's in India, back in 2001 I made the 18 hour train journey from Margao (Goa) to Cochin (Kerala) in a 2nd class AC Sleeper, it was actually a very pleasurable journey
Im March next year I'm doing Singapore to Bangkok on three different trains, going via KL and Penang, its a 1200 mile 48 hour journey