1. World’s Biggest Single-Cylinder MotorcycleThis outrageous motorcycle was built by Franz Langer, a retired German engineer who had his name written in the Guinness Book of Records for building the biggest single cylinder motor on a motorcycle.2. Suzuki Biplane (Motorcycle)This futuristic Biplane concept motorcycle was presented in 2007 by Suzuki in Tokyo. Due to the awesome aircraft-inspired design the rider is supposed to have the same feeling as being in an open-canopied biplane.3. World’s Tallest Rideable MotorcycleDo good things come in small packages? Not in this case! This massive motorcycle was built by Greg Dunham and is 6,500 pound heavy, 15 feet tall and 20 feet long. The huge design has entered the Guinness World Records,...