This 6,500 pound heavy and 15 feet tall motorcycle, built by Greg Dunham, is the world's tallest rideable motorcycle according to the Guinness World Records. It took Greg over three years to build it and he spent aorund $300,000 on parts.
Here's a video clip of the amazing monster cycle:
Link - via GadgetVenue
*speechless*
I knew it was going to have baby-wheels at the back to support it from falling over. Figures.