rusted field railcar 3d model

Stylized 3D game asset of a field workshop railcar for an armored survival train. Boxy service car with roof vent, folded crane arm, welding lamp pods, large tool lockers, side workbench panels, scrap bins, reinforced steel shutters, warm amber work lights. It should clearly read as repair and salvage support without needing text labels. Use chunky simple crane geometry and broad tool shapes, avoid tiny tools, loose wires, or complex interior machinery. Diesel-rust industrial frontier style, GLB-ready isolated train car. No rails.