Here's an extremely rare variation of the GG1 very few people are aware of. It's the pair of GG1s rebuilt by Amtrak on an experimental basis with diesel prime movers. Well, not really. Before someone contacts Lionel asking them to make a Vision Line version of the diesel powered GG1, it's just an early Amtrak brochure with doctored images of pantograph-less GG1s at the head end of a passenger train away from electrified territory. We all got a good laugh out of this one when it was issued.
Bob