Logistics drones and delivery vans serve different but complementary roles in congested urban last-mile delivery. Drones can bypass road congestion for lightweight, urgent, and short-distance shipments, while delivery vans remain essential for high-volume, heavy, and multi-stop deliveries. The most effective city logistics model combines both through a unified intelligent cloud platform that coordinates low-altitude air routes, ground vehicles, delivery hubs, and real-time operational data.