Build your own vintage truck with this 3D wooden mechanical model kit — a masterpiece of design and engineering. This self-propelled UGM-11 truck puzzle features a working four-cylinder rubber band engine, steering system, and fully functional gears. Each laser-cut wooden piece fits perfectly for smooth, glue-free assembly. Experience the thrill of mechanical motion as the truck moves forward or backward like the real thing. Perfect for hobbyists, mechanics, and collectors who appreciate intricate craftsmanship and timeless style.Key Highlights:• 3D self-propelled wooden truck model kit• Realistic design with visible mechanical parts• Functional 4-cylinder rubber band-powered engine• Steering and moving wheels for lifelike motion• 420 precision laser-cut wooden components• No glue or special tools required for assembly• Includes CAD + CDR + illustrated manual• Ideal gift for mechanics, model builders, and collectors