The Railpower GGS2000D was created off of a EMD GP9 and was built in New Westminster BC Canada at SRY. As a green goat only one was ever made and has been in storage for a few years now. The unit was tested on the UP and was never accepted by the UP although it is a prototype and it still is at New Westminster as of 2016. The engine of the GGS2000D is a 90HP Caterpillar genset which was converted to a 130HP diesel because it wasn't enough of supply. It was named Emerald because of the founders daughter. The unit was used by converting a WVRD 2890 GP9 formerly southern pacific. The unit was tested during 2001-2006 and now is in storage as of 2016.
References
Railpower GGS2000D Wikipedia(Text) CC BY-SA