I am first owner of a car that had 505 miles on the odometer when delivered (FL to KS). Dealer took delivery in September of '22, I bought it 2 years and 2 months later. So I guess you would call it a lightly used demo/leftover, but I think it must have been their primary interior features (CUE, stereo, etc) demo. I say that because with half a thou on the odometer, the car had more than 60 hours of idle time!
BTW I've had zero issues and absolutely love the car.