[andrewmunsell]

CarPlay is rendered by the phone itself, so it's not strictly a function of how powerful the car infotainment is. You've been able to talk to Siri since the beginning of CarPlay so additional voice control is really just an accessibility thing

[joezydeco]

Some cars already have a voice control button on the wheel for their existing system which, if done correctly, is overriden by Siri+CarPlay. Which is really nice when it works.

[dhosek]

I’m able to control carplay by just saying “Hey Siri.” Siri’s abilities tend to fluctuate based on what Apple is doing on the server, the phase of the moon and whether I remembered to sacrifice a chicken that morning, but otherwise, it seems to work fine.