IN-VEHICLE SHARED-SCREEN SYSTEM WITH WRITE BACK TO MULTIPLE USER ACCOUNTS

In some examples, a vehicle head unit of a vehicle includes at least one processor; and at least one module operable to: responsive to authenticating a first user at a vehicle head unit of a vehicle, establish a session with a first user identifier, the first user identifier associated with the first user; responsive to authenticating a second user at the vehicle head unit, associate a second user identifier with the session, the second user identifier associated with the second user, wherein the first and second user identifiers are concurrently associated with the session; generate data while the first and second user identifiers are concurrently associated with the session; and store, based on the first user identifier and the second user identifier, the data to both a first user account associated with the first user identifier and a second user account associated with the second user identifier.