The document discusses the development of an online car rental system using PHP. It begins with introducing the motivation and existing challenges in car rental businesses that the system aims to address. This includes providing an efficient customer experience, ensuring data security and privacy, and optimizing fleet management. The proposed system is then described, which will feature modules for customers and employees. It will allow customers to book vehicles online and streamline the rental process, while giving employees tools to manage the inventory and rental agreements. Finally, the document outlines some implementation details and future work, such as integrating emerging technologies like IoT and collaborating with ride-sharing services.