Correct me if I’m wrong. I’m pretty sure it doesn’t matter which car is selected in the app. All that matters is which phone is synced to the car will via Bluetooth.For those with two (or more) Tesla’s on the same account exporting addresses to your car(s) works flawlessly. Whichever car is the one selected in the Tesla app will be the one the address is shared with. Super easy super convenient!!
For example if my wife gets in the car well before I do and it syncs to her phone, the phonebook and addresses the ones on her phone. The reason I know is the case is because I’ll attempt to place a call using the steering wheel with recent calls and they don’t look familiar because they’re all hers.
I’m pretty sure that’s probably true with the calendar as well although I have not paid enough attention to know for sure.