Our transportation system is making us – and the planet – sick, and the problem lies in the fossil fuel-powered automobile, which has taken over how we live and use space. Thankfully, solid urban planning + new technology has opened the door for us to bring our cities back from the brink, but we need to act quickly to ensure our communities will be places we want to live.

Gabe Klein is a founding Partner of Cityfi, a venture partner at Fontinalis Partners, has served as Commissioner of Chicago and Washington D.C Departments of Transportation, and is also the author of "Start-Up City: Inspiring Private and Public Entrepreneurship, Getting Projects Done, and Having Fun."