Apple's CarPlay Upgrade for your VW:
Connect your iPhone to the audio system and It will
recognize your phone then load up all compatible apps in your phone.
Then you will be able to touch / use control knob to control all those features granted by it.
Apple CarPlay will come with Genuine Composition Media Touch Headunit,
with built-in Apple CarPlay feature.
Apple's CarPlay Upgrade : Apple Map Navigation
Connect your iPhone to the audio system and It will
bring up Apple Map app from your iPhone.
Just like using it from the phone, It will bring up full feature of it.
With voice guidance, live traffic, speed limit and route info
Throughout your trip.
Apple's CarPlay Upgrade for your vehicle: Communication.
Connect your iPhone to the audio system and It will
recognize your phone then load up all contacts and display any
phone call / receive and messages.
It will read messages in voice, and you will be able to reply back with simple response,
along with aid from Siri.
Apple's CarPlay Upgrade for your vehicle: Music
Connect your iPhone to the audio system and It will
bring up compatible Musics from your phone / iTunes or Apple Music itself.
Also, if you have compatible Music App like Spotify - It will also bring up
those flyest jams.
Apple's CarPlay Upgrade for your vehicle: Siri Voice Control
Apple CarPlay will supports Siri, basically allow you to control
whole feature via voice.