1948 - ish Budd Transport RDC Self-Propelled Rail Diesel Car - Promo Ad

This original 7 x 10" magazine promotional ad featured the Budd Transportation designed RDC or Rail Diesel Car.  The ad is not dated front of back, so I'm estimating between 1948 and 1952 time frame.  This RDC was maintained and ran on the Western Pacific Railway.