I asked the same question here. Hopefully the OP gets chance to test it out, but yeah, like I assumed it would need an update from the car manufacturer or something. Perhaps CarPlay is more ingrained than we know
EDIT - ahh I see you replied there as well
haha, after a really underwhelming keynote, this is actually the one feature i'm excited about since i recently bought a new car with CarPlay.
I have a 2016 GTI Autobahn and sorry to say this feature does not work yet...maybe in later beta builds??