What is in this image? Provide a detailed description.

This is a simple line drawing of a whimsical train with cartoon-like features. The image consists of three train cars1. The first car, resembling an engine, has a large, rounded front with a window. Inside the window, there''s a cartoon character that looks like a dinosaur. The dinosaur appears to be peeping out, with musical notes above its head, suggesting it might be singing or humming.2. The second car is dome-shaped with multiple oval windows, giving it the appearance of a passenger or observation car.3. The third car also has a rounded top and is designed with striped patterns, resembling a classic circus or freight car.Each car is mounted on simple wheels and the train is connected by lines that suggest couplings between the cars. The background contains a few clouds, indicating a clear sky.The drawing seems to be designed for children, likely intended for coloring based on its black-and-white outline style.