SENSEable City researchers from MIT unveiled the Copenhagen Wheel today, a high-tech hybrid bicycle that is far different from anything you rode as a kid. The bike's large, red hub is laced with sensors that speak to your smart phone through a Bluetooth connection. The simple device lets you know where you are, how far you have traveled, which direction your facing, facts about air pollution and personal fitness information. The bike also stores energy when you brake and lets you release it when you need it. The Copenhagen Wheel incentivizes your bike riding by counting your "Green Miles," which the researchers liken to frequent flyer miles. Watch this video to see the bike in action and visit MIT's website for the full story.