CarPlay automatically adds every compatible app on the iPhone to the display, with no ranking of what actually matters while driving (Pocket-lint, two months ago). That means the default layout may not reflect what's useful behind the wheel. Apple built CarPlay to put iPhone tasks, navigation, calls, messages, onto the car's built-in display rather than the phone screen (Apple Support, last year). Connecting the phone gets those tasks on screen, but the deeper controls, app order, notification...