I did not see one on the Gamma but Jason Hill said it will have one. The rear hatch (IMO) should have one on the opposite side of the glass and the high center brake light. Maybe on when the hatch is opened.
IIRC, the ambassador who had a ride in the Gamma recently (At night as well.), mentioned that there was interior lighting from above, that was well done and did not seem to create glare. His comment were in a recent AOC video on YouTube.
Most late model vehicles shut off all lighting, audio and door locking once you hit the lock on your key fob. Possibility that APTERA will have same function by just walking away from your vehicle…. which was the way they proposed in early renditions.