Design a vehicle rental service like ZoomCar

Problem

Design a vehicle rental service like ZoomCar, with explicit focus on low-level design — data models, class structures, and object relationships.

Requirements

• Model vehicles, locations, users, and bookings
• Search vehicle availability by location and time window
• Support the reservation, pricing, and payment flow

Discussion points

• Core classes and their relationships
• Data model for vehicles, inventory, and bookings
• Handling concurrent bookings against the same vehicle