People generate valuable data as they move around, including where they go and what happens there. I will describe three recent research projects that show how to compute useful insights from location data. The first looks at how to efficiently use vehicle location data to update traffic conditions. The innovation here is that we can minimize the data we need, which reduces bandwidth and privacy concerns. The second project is an attempt to find the monetary value of GPS data using value-of-information principles in an advertising scenario. The talk will conclude with a description of how to compute safe driving routes based on historical crash data, including a method to balance between travel time and the likelihood of a crash.