futuristic motorcycle 3d model

Generate a realistic 3D three-wheeled motorcycle from this clay model photo. Keep a low, semi-recumbent Akira-style posture with forward footrests. Add an adjustable seat that slides forward or backward, with enough space behind for a second passenger. Fully enclose the engine for a smooth, continuous form. Preserve the fluid, viscous shape and symmetrical sail-like tail, with a sleek, polished surface. Use glossy metal and plastic in a futuristic underworld palette — deep black, smoky gray, and steel tones (no purple).