A Heavy Bicycle With a Light Footprint

Brian, a lanky man with a permanent smile and neatly kept dreadlocks, built his 700 pound bicycle out of aluminum strut and styrofoam. It has a flywheel to store momentum, which Brian, 49, says has helped his bike reach speeds of 80 miles per hour. The entire camper section is modular, can grow in length by six or more feet for winter, and can even tow a trailer.