This panel discussion at SXSW 2014 will focus on how big data and sensors are transforming transportation systems in cities. As urban populations grow dramatically, transportation infrastructure must adapt to become more efficient and sustainable. New modes of transportation enabled by data sharing and social media have the potential to revolutionize how people and goods move within cities. However, these changes also raise issues around data ownership, privacy, updating transportation policies, and defining government's role in systems that incorporate shared private resources. The panel will discuss whether transportation is the next major industry to be disrupted by big data, challenges around data control, how policy can evolve beyond a focus on roads, and whether current models for transportation planning need revamping.