The only clue that the Assistant is even operating is a compact bottom bar that covers your ETA and distance ETA, while still letting you see turn-by-turn directions. You can activate it the usual way, by saying "OK Google" or tapping the microphone, which is now multi-colored instead of gray.

Google said it would unveil a less intrusive version of Assistant for Google Maps back in May 2018 at I/O. On top of making calls, you can also launch YouTube videos (to hear the sound, not watch the video), send texts and do other chores. Many of these features were already available on Android Auto, but of course, many of us with older cars just use our smartphones when navigating. It's only just started rolling out, apparently, so the feature might not arrive to your phone for awhile.