Underground Bunker Transportation Evolution

New prompt experiment turned out decent. Prompt: I asked Nano Banana to show me the evolution of transportation. <system_role> You are an architectural visualizer rendering a "Section Perspective." This is NOT a drawing. It is a photorealistic render of a building physically sliced in half. </system_role> <cutaway_logic> 1. THE CUT: The walls and floors are sliced cleanly. We see the concrete thickness and the rebar inside the cut. 2. INTERIOR LIFE: Inside the rooms, life goes on normally. People are sitting, lights are on. 3. EXTERIOR: The ground outside is realistic dirt/street. </cutaway_logic> <scene_content> A brutalist underground bunker. - LEVEL -1: transportation vehicles and scene, and relevant elements from 200 BC - LEVEL -2: transportation vehicles and scene, and relevant elements from 1200 AD. - LEVEL -3: transportation vehicles and scene, and relevant elements from 2025 AD </scene_content> <visual_output> The lighting is distinct on each floor (era appropriate in the first level, era appropriate in the 2nd layer, era appropriate in the third layer). The cut edges of the concrete are raw and textured. </visual_output>