Tesla found it more convenient to use the rear camera to display rear traffic on the center screen than to install a rearview mirror in the cabin. Not that the Cybertruck doesn't come with a cabin rearview mirror. It does, although it's removable. This makes sense, considering that you cannot use it to see outside when the vault is closed. However, this approach poses a critical problem that has nothing futuristic about it.

As teardown veteran Sandy Munro discovered immediately after delivery, when he tested the Cybertruck, driving in the rain is incompatible with the rearview camera approach. Thanks to its shape and aerodynamics, the airflow around the truck creates a vortex, directing the dirt toward the rear camera. It may have eaves to protect it from the water droplets coming vertically, but Cybertruck designers did not think of the dirt drawn by the airflow when driving in the rain