Out of state most likely. That's the only circumstance. Dealers are required to do their own registration and there's no chance a dealer bought that illegal ass jeep brand new in california. I bet it jams tho
I Not-Readied a 2017 Ford Van with no plates and 27 miles on it earlier this week. It already had a bunch of graphics on the exterior for some sort of business, and the owner told me that he had just trailered it from Michigan, and that he definitely wanted/needed a smog. I saw little need to argue with him.