Besides showing off my growing Lionel traditional sized GG1's, there's a curiosity in the production of one of these modern era examples that poses the question "why?" It's not obvious in this photo but the sharp eye will catch the anomaly in the next.
Here we see, in chronological order, an Amtrak decorated 18303 from 1989, a 18308 silver version from 1992 and the green TMCC equipped 18313 from 1996. Other than color differences and the lack of a E-unit on the 18313 can you spot the major oddity?
Bruce