Awesome Machines and Incredible inventions featured in this video: The Monocycle, A Train Snow-blower, Helicopter Tree Trimmer, A Massive Excavator, The Hemi Air Raid Horn, Brick Paving Machine, 28 Cylinder Aircraft Engine and a Tunnel Boring Machine. <br /> <br />Innovations From Some of the World's Most Brilliant Minds. <br />They might not be elegant or flashy, but these monster machines are some of the biggest, baddest vehicles in existence.
