Maybe try some bubble gum in the mics "ear"?A lot of my concerns will be remedied if it is possible to mechanically deactivate the microphone. In my Rav4, there was a fuse that could be pulled that deactivates the data collection module, which doesn't actually stop it from collecting data, but kills the antenna for sending data. That was sufficient for my wants and concerns.
The microphone though is a big one. What about physicians who may discuss private HIPAA information, or other sorts of legally confidential content? I'd like to be able to do something that doesn't void the warranty (e.g. pull a fuse) to mechanically kill all microphone-related functionality, whether a fuse, or opening a panel and yanking out the microphone itself.