It was really cool when Amtrak was running those beauties. What a shame the RR unions kicked up such a fuss over a passenger service carrying mail.
All they managed to do was destroy a revenue source for one of their customers, Amtrak. It was also a cheap way to move mail for the Post Office.
Oh well, such is life. People have what seems to be a built in mechanism to shoot ourselves in the foot for the allusion of a potential profit. 
I just wish we would all think about the ramifications of our actions before charging head long into obstructionism.
