Create a high-quality black-and-white coloring book page for children, featuring a cute friendly cartoon car as the main subject. The car should have thick, clean, smooth black outlines, simple shapes, large open areas for easy coloring, and a cheerful child-friendly appearance. Add a simple background with a road, a few clouds, and small trees, but keep the background uncluttered. Pure white background, black line art only, no color, no gray shading, no gradients, no shadows, no textures, no cross-hatching. The illustration should be centered, fully visible, and fit well on a portrait coloring-book page. Use a consistent professional children’s coloring-book style with bold outlines and clear closed shapes. Suitable for children ages 4–8. Fun, cute, simple, printable, high contrast, clean line art, coloring-book illustration.