tracked robot 3d model

Create a precise 3D CAD render of the exact tracked robot in the reference image. Keep the original base unchanged: green metal chassis, black rubber tracks, same wheel layout, front ultrasonic sensor, and top electronics platform. Do not redesign the robot. Add a large rear cargo box mounted neatly on the back. The box must be rectangular, symmetrical, straight-edged, metal, open at the top, and deep inside like a real storage bin. It must look balanced and integrated with the chassis. The robotic arm must be a proper multi-axis articulated mechanical arm with clear shoulder, elbow, and wrist joints. The end must be a real two-finger gripper/claw. Make the arm proportional, functional, and industrial. Fusion 360 CAD prototype style, realistic metal, bolts, clean white background, elevated 3/4 top view, no sci-fi, no cartoon, no blurry image.