“Chicago can be stiflingly hot during the summer and rain-chilled in the spring, and its wind-whipped winters are the stuff of legend. So when the subject is “bicycle commuting,” Chicago is not the first city that springs to mind. But it’s becoming a hot bike-to-work town. In the next decade, it plans to expand its network of bike trails to 500 miles, and has set a goal of putting a bike path of some sort within half a mile of every city resident.”