MyDealerLot has transformed its car dealership customer service using MongoDB, a cloud-based NoSQL database. The company uses MongoDB to capture real-time RFID data and store it in the database, allowing for precise location tracking of cars as they move through the dealership. This enables dealerships to instantly recognize customers and offer personalized services, resulting in increased sales and improved customer satisfaction scores. By leveraging MongoDB's performance and availability features, MyDealerLot has been able to deliver sub-second updates to tens of thousands of users and store terabytes of data by 2015. The company's adoption of MongoDB has enabled it to cut development time from weeks to days and has led to significant business benefits, including a 10-15% increase in sales for some dealerships.