While some in-car interfaces are full Android launcher replacements, Drivemode is a pull-out panel that can easily be disabled via the notifications panel.
It uses speech to describe things on screen, so you don’t need to look at it. Just swipe up or down between the main options. You can call or text someone via Contacts after searching for one by voice or swiping through favourites.
Drivemode can also respond to calls with preset messages and read out received text messages, although there’s not yet an option to respond via voice as there is in the Agent app. The Music option lets you tap the screen to play or pause (in the chosen music player) and swipe left or right to change tracks.
A Navigation option links to Google Maps to provide step-by-step directions on a map where you can set favourite places too. Finally, Settings contains a bunch of options, including driving detection.