When the water supply runs low, the engineer stops at a water tower. Some trains have just a few cars. Look out the window. There are three busy trains. On an overnight passenger train, travelers relax in private roomettes or watch the sights from the lounge car's dome.
Some people sleep in sleeping cars.
The steam engine is pulling a cattle car, a side dumper, and a box car. Containers can be carried on trains, in ships, and on trucks. They don't have to be unpacked every time they are moved, so they save time and work. A huge rig puts the container on a freight-train flatcar. An electric locomotive pulls a long freight train.