Well, the 3R/2R mix of Sunset 3rd Rail has allowed the production of a number of locomotives that probably never would have seen the light of day. Recent examples: CN/GTW 4-8-4's, CPR 4-8-4, 2-10-4, CB&Q 2-8-2 and the upcoming CGW 2-10-4. Like "orphan drugs", these would have been "orphan locomotives" ! But I am enjoying them now, or will be soon !
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