Speaking of all the experiments the railroads did in the fifties, trying to keep what passengers they had and wooing more, it seems that more effort should have been put into buying RDCs. They were already proven reliable and tracked well. The research and development had already been done by the Budd company. Trains of up to twelve units could be made up and separated into two or more separate trains when need be. The list is too long to spell out all the benefits.
All of that said, it's easy to look back and find mistakes made.
