Transportation engineers and planners have long classified our complex transportation system as vehicles versus users, or by mode (cars, airplanes, trains, buses, bikes, etc.). The increasingly global system is a labyrinth of public and private actors, high and low technology. There is widespread agreement that the current system is not sustainable in terms of equity, economy or environment. While the potential applications of technology to improve our transportation system are numerous, there is ittle agreement on which solutions are reasonable to pursue. This course provides an outline of the transportation system, its resiliency (or lack thereof) and its environmental impacts. It then delves into consideration of the future forecasts for people, travel, fuels and vehicles. The course touches on the role of community land use patterns, the sharing economy and the potential bounds on our mobility.