Have you ever wanted to be an urban planner? How about a landscape architect? Are you an urban planner or a landscape architect or do you just really love cities? If you answered yes to any of these questions — and maybe even if you didn't — you'll love Streetmix.
Streetmix is a free web app that lets you design, redesign and remix city streets to your heart's content. You can make a model of your own street and share it with your friends. You can make a model of an environmentally friendly street and share it with your mayor. How about just making an awesome model and sharing it with your fellow Gizmodo readers in the comments? Ours is above. [Untapped Cities]