Gabe is the former Commissioner of the Chicago and Washington DC Departments of Transportation and a veteran of mobility start-ups including Zipcar. In 2016 Gabe co-founded CityFi to help city leaders, CEO's and varied stakeholders to understand the complexity of 21st century challenges, facilitate people-centric solutions, utilize new models for delivery and technology-based tools to deliver triple-bottom line results. Clients range from foreign governments to cities, states, start-ups and publicly traded companies. In 2015, Gabe joined Fontinalis Partners as a Special Venture Partner on their $100 million 2nd fund. Gabe also advises governments and companies worldwide on innovation in cities including Singapore where Gabe has been a visiting fellow for the Centre For Livable Cities, working on creating a “car-lite” city-state. In 2015, Gabe also published Start-Up City with David Vega-Barachowitz on Island Press, a manifesto on revamping how (and how fast) we innovate in cities and rethinking public-private partnerships with a triple-bottom line approach as technology shapes a dramatically different future.