餐車出沒地點公告橫幅（復古旅行海報風）

prompt

Illustrate a wide announcement banner for {truck_name}, a {cuisine_type} food truck parking at {parking_spot} this week. Bold retro travel-poster style: the truck drawn in flat vector illustration with thick outlines, halftone shading, and a sunburst background in mustard, cream, and tomato red. Add steam swirls and floating ingredient icons around the truck for appetite appeal. Keep the right 40 percent of the canvas as a flat-color safe margin for ad copy listing {serving_hours} and location details. No embedded text or lettering anywhere. Output 16:9 landscape ratio suitable for Facebook event banners and website headers, crisp vector edges, print-quality resolution.