This Saturday, February 3rd, is the last day to vote in the History Channel's The City of the Future Competition, which asked participants to imagine the city of 2106, a century hence. If you follow the link, you can see info on all three finalists, and well as the path to casting your own vote for who should get the $10,000 first prize.
The more I look at this, the more I think the entry of Chicago's UrbanLab is truly the best of the bunch. And while I may be accused of local boosterism (Go Bears!), I'm thinking that after you examine all three, you'll come to the same conclusion. Read all about it, and see the pictures here.