This sounds similar to a guy I interacted with on FB last week. Below is the exact verbiage of the title and the description.
2024 Dodge durango SRT Hellcat Premium Sport Utility 4D
$77,500
TOTAL OF 8 NEVER TITLED HELLCAT BLACK & PREMIUM PACKAGE DURANGOS LEFT OVER NEW STOCK FROM FACTORY PURCHASED FROM DODGE NO MILES NO OWNERS ALL WINDOW STICKERS VIEWABLE IN LISTING 1 VAPOR, 3 DESTROYER, 4 BLACK SAVE HUGE AND GO FAAAASSSTTT AAAFFF INBOX ME PLEASE!!!
He said they were from a dealer and left over stock from dodge. After interacting with a him a bit he said he only had 1 left and it was a demo. I told him I was not interested in a demo because I would not know if the the break in procedure had been followed and because the warranty had already started. Which he replied that the warranty had started on all of them and I should just buy an after market warranty. When I asked him why the warranty had started if they were new and never sold he said they were purchased at auction but never titled. I would think a dealer buying a new vehicle at auction would show up on a car fax but I do not know for sure. OP, good luck with the purchase and the AG. I hope it all works out. It sucks to buy a vehicle when the dealer has not been straight with you.