There's none on the download station. I know magicland was working on metroliners some time ago, I'm not sure if he's completed them; however I'm pretty sure they were to be payware.
Jefffffffffffffff was working on some I believe, but I'm not sure.
There has been talk about them, If you search on the DLS for "Acela" there is a version of one there. You'll have to make do with it for now. (PS trust me, I know the Acela isn't the metroliner. but the creator called it the acela paint scheme)
When people mention the Metroliner, I think of the Amfleet-like cars running along under catenary. They had a great potential, but were poorly designed.
When people mention the Metroliner, I think of the Amfleet-like cars running along under catenary. They had a great potential, but were poorly designed.