Great pictures...but there are three or four photos that the description describes the cars as Colorado Railcar products.
The SPRINTER cars were actually made by Siemens, and those cars are near-identical, if not identical, to a Deutsche Bahn class 642 DMU.
[
www.railfaneurope.net]
The brand name is Desiro (Classic):
[
www.mobility.siemens.com]