Sometimes it arrives at 6 p.m. Sometimes it arrives at 8 p.m. The last time I rode it, the California Zephyr arrived in Emeryville around Inconvenience” is what Amtrak says instead of “We’re sitting on this siding, waiting for another freight train to go by. Conductors apologize for it, when they aren’t knocking on the lavatory doors, checking for stowaways.