At the top of the Photorealistic picture taken from a camera image, place the text "Happy birthday" in large, clean white letters with a soft drop shadow so it pops against the sky.

Ultra-high-definition 4K UHD photograph; realistic lighting, lifelike textures, rich depth of field. Golden hour just after rain: a vivid double rainbow arcs across an open suburban street. In the foreground, a shiny pastel-blue vintage compact car is comically loaded with a towering three-tier birthday cake strapped securely to its roof rack with rainbow ribbons; a smear of frosting trails down the side, and a bunch of rainbow balloons bob from the antenna. The wet asphalt mirrors both the car and the rainbow; raindrops bead on the paint and windows. Behind it, a few cars in a soft-focus line form a subtle red-to-violet gradient, reinforcing the rainbow theme. Playful, dynamic angle with the front wheels slightly turned and a light confetti sprinkle catching the sunlight. Shot at eye level, 35mm full-frame, f/8 for crisp subject focus with gentle background bokeh; warm, natural sunlight, realistic shadows and reflections; vibrant yet true-to-life colors; no people in frame.

At the bottom of the image, add a small cheeky caption in a thin modern sans-serif: "Fueled by cake, powered by rainbows."

No other text, no borders, no watermarks.

Generated with these themes: Rainbows, cars, and .

Made with ❤️ by AI.