Similar to how you extend your display to multiple monitors or on a projector, you can choose to continue, duplicate, or use the second screen. It is your second monitor but over wireless.
and CarPlay just appeared on my screen automatically. Perfect! Well, almost. From my experience driving with standard and wireless CarPlay, I know to expect latency when using steering wheel ...
Select Cast to device from the menu. Select your TV from the options ... How to connect your Chromebook, laptop or MacBook to your TV using a cable If your TV doesn't support wireless screen mirroring ...