I bought this magnificent Ferromex SD70ACe today, and it runs smoothly. I am concerned about its lack of high speed, but even when crawling at low speed, it is a smooth operator. Ferromex owns 116 of this specific version of the SD70AC, which was replaced in 2015 by a more emission-free version.
I wonder: does anyone else on this forum own any Ferromex locos or rolling stock?