Railbus

Okay kiddo, so a railbus is like a big car that runs on train tracks instead of a road. It's smaller than a regular train and usually has a diesel engine that makes it go.

People use railbuses to travel short distances on the train tracks. They're like a hybrid between a bus and a train because they can carry fewer people than a train but they can go places where regular buses can't.

Railbuses often have big windows so people can see out and enjoy the beautiful views as they travel along the tracks. They're also very maneuverable which means they can go around corners and up steep hills better than regular trains.

So basically, a railbus is a special type of vehicle that lets people travel on train tracks just like they would in a bus or car on a road. Pretty cool, huh?