Private railroad car

Okay kiddo, imagine a big train that carries people and things from one place to another. Sometimes, very rich and important people want to travel in their own fancy way and don't want to share the train with other people. That's where a private railroad car comes in. A private railroad car is sort of like a fancy, luxurious version of a train car that only one family or group of people can use. It has comfortable seats or even beds to sleep on, a dining area to eat delicious meals, and sometimes even a special place to relax and enjoy the view. The car can be attached to a regular train and go wherever the people inside want to go in their own private, luxurious way. Pretty cool, right?