During the National Bike Summit in Washington, DC yesterday, Google announced it was adding "the most requested addition" to Google Maps, bike directions. Now when you get directions on Google Maps, in addition to By Car, By Public Transit and Walking... You can now select Bicycling. While how useful this will be depends largely on where live, there will be several cool features. Selecting the Bicycling option will show bike-only paths, bike lanes on streets and will even calculate the estimated travel time based on hills and fatigue. Now they just need to add options to select your fitness level, because some people are less like Lance Armstrong and more like Comic Book Guy.