https://wccftech.com/ios-14-code-shows-that-apple-and-bmw-are-working-on-carkey-for-iphone/

New code discovered in iOS 14 reveals that Apple is working with BMW as one of the first partners who will support CarKey. The purpose of CarKey will be to replace physical keys and allow users to unlock their cars with a virtual key, right from their iPhones.

Apart from unlocking a car, CarKey will also let users open the car’s trunk, or control other features as allowed by the manufacturer. Users would also be able to give other people access to their car, through the CarKey interface.