The document describes a proposed carpooling application called CarMate. It aims to address safety concerns, lack of visibility into available rides, flexibility for last minute changes, and lack of insights into savings from carpooling. The proposed solution would allow users to filter by gender, see available rides, adjust pricing or routes dynamically, and view savings analytics. It would also incorporate reviews and ratings of riders and drivers to promote accountability. The document outlines the user flows, from signing up to completing and rating a ride.