jis
Permanent Way Inspector
Staff member
Administator
Moderator
AU Supporting Member
Gathering Team Member
The same article in Wikipedia suggests that it was obsolescence, unavailability of new units as Budd stopped manufacturing them. The followup that Budd came up with the SPVs were beset with issues from which they never recovered, and the technical expertise for manufacturing DMUs moved almost irrevocably to Europe.Now, if they were "commercially successful", less costly to operate (50% seems like a nice savings) and could save time on end turns - can you substantiate a "good" reason the design was abandoned for use
As for Amtrak, demonstrably Amtrak would have been stuck with a small and progressively more expensive to operate, fleet which were more suitable for routes that Amtrak was not picking up and in the process, drained scarce resources away from fleet modernization for both LD service and corridors with more dense traffic.
In the matter of current fleet modernization, I am sure Amtrak is looking closely at modern DEMUs.