No new cars have 0 miles. They have all been driven in transit at various stages. No one cares that you drive one like this. Carfax is garbage nonsense anyways. All that shows is the state record which likely wasn’t processed within 30 days. Most dealers are on a monthly or quarterly cycle anyways. Like with my auto body paint business most of my dealers paid my purchase orders monthly, some quarterly. That sucks because I had to float the funds in between, and automotive paint has enormous overhead relative to profit margin. I doubt any dealer is filing paperwork on any sale immediately. The 30 day window is likely just formalizing the filing window that already existed, and likely coincides with an increased filing window for dealers. No dealer really cares about individual sales like this anyways. The thing everyone cares about is volume and turnover rate. Everyone also knows only fools with too much money buy new or from dealerships. New cars burn tons of money from day one, and almost all used cars at lots are lease returns or repos. In both cases the car is beat and unmaintained. No one I worked around at many dealerships owned a car off the lot. I went to wholesale auctions as an agent a few times and it is a joke of a clown show. I started buying stuff off Craigslist to sell to dealers on the side when business was slow, because much better cars can be found this way and for better prices than auctions without the nonsense constraint of never being able to drive the auction cars prior to sale. I have never owned a car that sold for less than I paid for it initially, which is a brag few people even think about or realize is possible. You just need to know how to spot a deal, and cool rare cars people will still want to drive in the future.