Renault has partnered with other Blockchain champions, Microsoft and VISEO, that ensures that data in the car passport is stored in a secure and transparent manner on the Blockchain.
But Renault is looking to consolidate that information with the power of Blockchain technology. With its transparent nature and open architecture, all information about a car can be gathered and placed in one spot for customers to access.
The current method of storing information about customers and their vehicles is spread across a whole host of different information systems maintained by automakers, insurers, repair shops, and more.
https://cointelegraph.com/news/renault-uses-blockchain-to-store-car-passport-details