Not breaking any new ground around here, but for ready reference, here are photos of Euro City
equipment. It shows the evidence that the Siemens USA cars being built for the State passenger agencies and for Brightline, bear striking resemblance.
Also, here is a photo of a Czech
liveried RailJet. The CD - České dráhy - operates their sets in interchange with OBB to destinations in Austria. I think their livery far exceeds that of the Austrian sets.
Now my point here is that not all this equipment is built by Siemens, even though they designed it. Siemens does have plants within Eastern Europe, and I have a photo of a builder's plate on a Euro City car from a builder other than Siemens. In short, even in Europe, the work must be parceled out.
All told, the NEC "Regional" replacement car, on which the order could easily be 500 (more if expansion is envisioned), will have to be divided amongst several overseas car builders - Europe and Asia - and enough to each to make it worth their while to set up assembly plants on US soil. But the Siemens designed car - proven in cold temperatures - certainly looks like the "best bet".
Finally, I won't be "going over" this year, and given my age, not likely to do so again. But I had much enjoyable rail riding (day trips from Salzburg) during the six years that I did so.