Tesla’s Model 3 has shipped from the start with a camera pointing at the cabin, but it has gone unused ever since. What’s it for? You won’t have to wonder much longer. Elon Musk has confirmed that the camera is there to support Tesla’s eventual robo-taxi plans. Since you won’t be in the car yourself when it’s picking up rides, the camera will provide video evidence if passengers trash the interior.

A pair of sleuths have also captured pictures of what the camera sees, and it unsurprisingly provides a clear, wide-angle view of the seating.