Transportation is a huge problem for our cities. In urban areas, Latin Americans spend up to four hours a day in traffic jams. Lots of cities have levels of pollution that are higher than those considered healthy. At inter-urban level, the alternatives are slim, especially for those living in small and medium-sized cities. Many citizens would like to share their travels by private car, but most never get to do it due to lack of communication and fear of traveling with strangers. Launched in September 2013, Carpoolear is a platform that connect those looking to share a ride, in a safe and simple way. Unlike similar systems, Carpoolear allows both passengers and drivers to post their trips and relies on Facebook to generate trust networks. Recently, it has developed Carpoolear Mas, a closed system for large institutions interested in promoting carpooling among its members. In its first two years, Carpoolear has attracted over thirty thousand users. Most of them join for the economical or environmental benefits; all of them stay because it’s fun! Our users are also our partners in bringing more users onboard: by sharing pictures and videos of their rides, they help us convince more people of the benefits of carpooling. Gabrielis an Industrial Engineer born in Rosario, Argentina, and currently living in Buenos Aires. He has worked in The Dow Chemical Company and as an Account Strategist at Google. He is a proud member of the ROI Community of Young Jewish Innovators. Was selected as Young Environmental Envoy by Bayer and UNEP for founding the nonprofit STS Rosario, that focuses on sustainability issues. He talks about cities and mobility to anyone willing to listen: CityCamp Buenos Aires, El Mundo de las Ideas and San Luis Digital, among other venues. You can find him riding a bike, or on Twitter (never simultaneously!).