The document discusses a proposed carpooling app called Hitchd. It aims to provide safe, flexible and reliable carpooling options for commuters. The app would allow riders to hitch rides on short notice and allow drivers to offer rides according to their schedules and destinations. This would help commuters save on transportation costs and traffic time. The document outlines user profiles for a potential rider named Pat and driver named Jo and describes key features and interaction flows for the proposed Hitchd app. It also shares feedback from user testing which was mostly positive and suggests some improvements for version 2.0 of the app.