TED Talks - Cars Almost Killed Our Cities, But Here's How We Can Bring Them Back

Our cities are making us – and the planet – sick, and the problem lies in the automobile, which has taken over how we live and use space. Thankfully, new technology like autonomous vehicles and 3D printing has opened the door for us to bring our cities back from the brink, says transportation expert and city planner Gabe Klein. But we need to act quickly to ensure cities will be places we want to live.