A picture just flashed through my brain of a tandem engine set that has a Blue EF 60 that couples in front of a green EF 60. Why do I see this? I know I have seen this maybe in a video too. Might this set be different EF units? An EF 63 perhaps? Please tell me I am not going loony....please?
![[Image: 7071.gif]](https://www.allsmileys.com/files/sweetim-texticons/7071.gif)