The City of New Orleans is the name of a passenger train, formerly belonging to the Illinois Central, now Amtrak. It runs between Chicago and New Orleans, by way of Memphis. (Click for map, courtesy of Amtrak.) Railroad passenger routes have traditionally had names, not just numbers, unlike airline flights.

Anyone who loves trains would love to browse through this web page I just found called Named Passenger Trains of 1948.

Here are the passenger trains that used to pass through St. Paul, MN as recently as 1970:

The Badger, The Empire Builder, The Fast Mail, The Gopher, The Mainstreeter, The Morning Hiawatha, The North Coast Limited, The Pioneer Limited, The Western Star, The Zephyr

And most of those ran several times per day! A total of 30 trains on some days! Now there is only one per day going each direction: the Empire Builder. (It runs from Chicago to either Seattle or Portland, OR, splitting at Spokane, WA.) And it doesn't go to the old station in downtown St. Paul; it goes to a little nondescript station in the middle of an industrial district midway between downtown St. Paul and downtown Minneapolis.

According to Amtrak's site, it looks like the City of New Orleans also only runs once per day each direction.