Baggage car

Okay, so imagine you're going on a big trip and you need to bring a lot of stuff with you. You can't fit it all in your suitcase, so you put your extra stuff in a big box and send it on a special train car called a baggage car. The baggage car is like a big room with shelves and compartments where all the boxes and suitcases go. When the train gets to your destination, the baggage car is opened up and the boxes are taken out for you to pick up. It's like a really big locker for your stuff on the train!