Given the nature of this locomotive, is there one manufacturer in the US which could produce an ACE-3000 today?

Being in the UK I can't speak of US facilities but such a beast could be constructed in Europe with different places doing different bits and it all coming together at a central site.

I agree with Martyn - it would take a consortium of different suppliers working together, each doing what they do best, to pull off a project of this complexity. I wouldn't limit it to either Europe or America, but the best of all continents.

dave

The original plan for ACE was to have most components provided by outside suppliers and assembled in a central location. I'd think any sufficiently large, amply equipped industrial fabrication shop with overhead cranes and rail service would fit the bill.

Do you have something specific in mind? :-)