If you prefer cycling as your means of transportation and you live in a big or even medium-sized city, then you've likely run into overly crowded bike racks and strict lock-up restrictions before. E-bike Mobility answered this problem with the Biketower BT 20-11, a multi-story bicycle park that can manage up to 112 bikes and features a solar-powered charging station for those with motor-powered bikes. A prototype version, dubbed the Biketower bt 72, is currently available for use at the central rail station in Meckenbeuren, Germany. [InHabitat]