This is a very odd picture for Europe - even the couplers on the engine are American, not European!
The all-sleeper train on the picture seem to rest in Lvov, Ukraine (as far as I can judge the railway station). The engines are Russian 2M62 passenger diesels originally made for East Germany and Hungary. Today M62 is barely used in Europe (I believe, only as switcher) - but in the former USSR it is still popular. It's diesel has the same design as of a Russian submarine.
In the fact, the carriages ARE the most authentic streamliner copies. I wish Amtrak has more of this simple design cars. A factory in Tver', Russia (and an other in Amensdorf, former GDR) are the largest streamliner-factories in the world today, followed by Chinese.
I think, the biggest challange for the Amtrak is the lack of equipment, not the high-speed. Countries like India, China, Russia do not have extensive high-speed network, but the simple designs like the ones on the picture do work well enough, esp. if in large numbers.
As I know, the factory in Tver' has VERY cheap prices. Perhaps Amtrak could look there and buy these streamliners. This equipment was made to withstand most harsh weather conditions.
I would choose such Russian-made 4-bed sleeper over a plane or Greyhound (yuck!)
George