Silver Streak was originally built for the articulated DENVER ZEPHYR in 1936. When the CB&Q upgraded the DZ to a domeliner in 1956, the old trainsets were sold to C&S and FW&D to run as the “finer, faster TEXAS ZEPHYR”
Q: how can an older trainset make the 1940 ZEPHYR finer?
A: the articulated set brought full diner service and a wider variety of sleeping accommodations to the train. Yet, it also brought less flexibility in consists. Some of the car sets were 3 car articulations. One bad order car took out all adjoining cars with it.
Silver Streak resides in Austin, TX. I think it is a juice bar or something similar.