Pictures of the Qinghai-Tibet Train Interior:
The following are photos were taken inside the Lhasa Express train travelling from Lhasa to Beijing.
Inside The Tibet Train

Hard seat car. The seats are soft but they do not recline.

Inside the hard sleeper car

People in the hard seating area. The hard seats are packed shoulder to shoulder with locals. Even though the seats are designated for 3 people, usually more than 3 people are in the seats.

The hard sleeper on the Qinghai-Tibet train.

The aisle of the Lhasa express. If you get a unreserved seat on board the Tibet Train a good place to sleep at night would be in between the cars.
Tibet Train Washrooms and Sinks

Washroom in the soft sleeper car.

Washing facilities throughout the train to Tibet.

Washroom in the hard seating area.

Hot water dispenser - great for Raman.

Sink in the hard seating area.

Dining car inside the Skytrain.

Dining table inside the skytrain.

Sample meal, cost is around 30 Yuan, on the Skytrain.

Beer and spirits bar onboard the Train to Tibet.
More Photos:
View of the Tibetan Plateau from inside the train
Oxygen Components on the Qinghai Train