Deploying a real-time location app with Hasura GraphQL Engine and Distributed SQL requires installing a 3-node YugabyteDB cluster on Google Kubernetes Engine (GKE) and deploying the Hasura GraphQL Engine on GKE. The application uses React and leverages Hasura's real-time capabilities using subscription to track vehicle locations in real-time, powered by a 3-node YugabyteDB cluster. Distributed SQL databases are gaining popularity for their scalability and high availability features, and YugabyteDB is an open-source, high-performance distributed SQL database built on a scalable and fault-tolerant design inspired by Google Spanner. By combining Hasura GraphQL Engine with YugabyteDB, developers can create a scalable and real-time location tracking application that leverages the strengths of both technologies.