Though public libraries have shared internal data, such as circulation data, publicly via open data portals, bookmobile data sharing has been limited. Sponsored by the Washington State Library, and using data from North Central Regional Library as a pilot, the Open Data Wagon project researched, collected, and published library bookmobile data openly on data.wa.gov, along with a reusable dataset template. Because bookmobile operations can be expensive, this project aimed to encourage information sharing among libraries, expand funding opportunities for mobile services by supplying additional data, and heighten the value of library mobile services. More info: https://opendatawagon.github.io