This month marks a big milestone for the bicycle. We've had two hundred years of two-wheeled travel. On June 12, 1817, German inventor Karl von Drais took a little ride on his new invention, the 'Laufsmaschine'. His first reported trip, from a castle courtyard in Mannheim to a coaching inn 5 miles away on Baden's best road, took a little over an hour – and changed travel forever.Reproducing Karl von Drais' First Ride. Image courtesy of City of MannheimVon Drais'...