Containers

Been obsessed with containers. 
I can hear the trains at night, far enough away that I usually don't, but sometimes I do, and they are incredibly long; isn't 15 or 20 minutes a long time for a train to go by? How many railroad cars does it take for it to take that long?  Isn't 20,000 an incredibly large number of containers for one ship, especially when it's followed by an unending line of similar ships? But then, I hear that Suez snafu might affect coffee coming to the US . . . what's to be done?