What is in this image? Be very specific. Scientific, Engineering style! No emotions, no opinions, no metaphors. Just the facts, as detailed as possible.

The image is a line drawing depicting four cartoon-style vehicles, each characterized to resemble a train car, aligned horizontally. Each train car features anthropomorphic animal characters as passengers, drawn in a simplified, childlike style.Each vehicle is outfitted with a set of simple, circular wheels—three per car—located at the base. The vehicles lack detailed mechanical elements, signifying a stylized, rather than realistic, portrayal.From left to right1. The first vehicle is occupied by a cartoon dog wearing a hat, depicted with a protruding snout, eyes, and a smile. The "car" has angular contours with a heightened, semi-rectangular upper structure embellished with lines, simulating a fringe or a shutter-like texture.2. The second vehicle contains a rabbit character, drawn with long, upright ears and large circular eyes. The car’s upper structure is taller and narrower than the first, tapering slightly at the top.3. The third vehicle houses a sheep, rendered with a fluffy wool texture indicated by rough, wavy lines. The car mirrors the tapered design of the second vehicle, slightly more pronounced.4. The fourth vehicle features a cartoon character of a cow with distinctive ears and rounded horns peeking over the top edge. This vehicle is distinguished by a row of upright lines on the top back, implying a different texture or design element.In summary, the image is a playful representation of a train with animal characters, utilizing a simplified graphic style suitable for basic visual interpretation, specifically targeted at younger audiences.