[filoleg]

>Maybe they already have it?

They do. You can control many things with voice in Tesla.

I don't know the comprehensive list of things you can use it for, but so far I used it to:

* Change temperature

* Play a specific song

* Set navigation to a new destination

I didn't put switching music tracks (next&previous)/adjusting volume on that list, because those can be easily performed using the scrollable button on the steering wheel.