Since almost no one owns a Windows Phone, let me describe what happens. A text comes inbound. The phone, which is paired over Bluetooth tells the car to pause whatever audio is playing, then it takes over the microphone and interacts with the driver. All the voice recognition is done over the phone, I believe over its data connection in the cloud. When the driver eventually sends the completed message, which can be recorded in a bunch of parts, or the driver says ignore, or if the driver doesn't respond, the phone drops the connection back to the Tesla and the Tesla continues playing whatever media it had before, until the next text message arrives.
I doubt that this is phone specific. I think you could write an app in Windows or Linux, probably OSX as well, and have the device do that work. But then you would have to have a mobile connected device other than your phone and it would have to have access to your texts, like iMessage does, or the Windows API for responding to texts, which I think works over Android phones as well so Linux may have something similar.
I doubt that this is phone specific. I think you could write an app in Windows or Linux, probably OSX as well, and have the device do that work. But then you would have to have a mobile connected device other than your phone and it would have to have access to your texts, like iMessage does, or the Windows API for responding to texts, which I think works over Android phones as well so Linux may have something similar.