Amtrak train #6 that left Emeryville on May 1 has a couple extra cars on the end of it. I saw it passing through Agency, Iowa today. From what I can tell, the Amtrak California coach CDTX 34953 Pacific Grove is the second-to-last car. Behind it is the Amtrak baggage-coach AMTK 31017 wrapped in an advertisement for San Francisco making it look a bit like a cable car. If any of those details are wrong, I'm open to corrections. I don't know why these two cars are on the California Zephyr.