The Mojio iOS SDK by Mojio allows to access API data with the aim to implement car analytics into an application. Resources available include lines of code to initialize the SDK, authenticate a user, fetch data, and work with entities.
In January, OnStar announced an API would allow third party developers to integrate their applications with OnStar's platform. Last week, General Motors announced its first partner for API integration: RelayRides. RelayRides is "[t]he world's largest peer to peer carsharing marketplace." The partnership with GM allows OnStar users to leave their keys in their cars when renting a car to a fellow RelayRider. The renter can then unlock the car with a smartphone app or by responding to a text message.