All I can find is that the new train replaces a diesel train, and that Tesla took flack last year for running a diesel-electric train as their employee shuttle.

All I can find is that the new train replaces a diesel train, and that Tesla took flack last year for running a diesel-electric train as their employee shuttle. Yes, the train is a Siemens Mireo, and I can't find anything that says that Tesla was involved in the development of this specific train at all... so Tesla provided branding, I guess.