A relatively-new player in the US is Siemens. They're building new passenger locomotives, including electrics for the Northeast Corridor and diesels for elsewhe

A relatively-new player in the US is Siemens. They're building new passenger locomotives, including electrics for the Northeast Corridor and diesels for elsewhere. The SC-44 Charger and its derivatives [0] use Cummins QSK prime movers, which are high-speed diesels comparable to Euro designs. [0] https://en.wikipedia.org/wiki/Siemens_Charger https://en.wikipedia.org/wiki/Siemens_Charger