An Apple patent (number 8180379) for synchronizing mobile and vehicle devices has appeared at the U.S. Patent & Trademark Office.
Per the patent, location information is received at a mobile device from the memory of a vehicle device. The mobile device is updated based on the location information. Sensor data is received from at least one sensor measuring movement of the mobile device, and an estimated location of the mobile device is calculated based at least in part on the location information and the sensor data.
Here's Apple's background and summary of the invention: "The role of traditional printed maps is being supplanted by modern devices capable of rendering dynamic map displays. Devices that include mapping or navigation applications provide information regarding an area selected by a user by recalling map data from local memory or networked services.
"Mapping devices include appropriately configured personal computers as well as dedicated mobile...| Read more »