The ETA is from the source code of the Tesla page. If you go into the inventory cars pages and look at the code you will see 2 pieces of useful information. PlannedGADailyDate which is the manufacturing date of the car and ETAtoCurrent which is the ETA of arrival to its booked destination.is this ETA from Tesla?I also noted that most if not all the inventories have VINS resembling LRW321-322's ;probably all on the same ship as the ones that got allocated around 10th of August.The question is whether or not they have already shipped but they seem to all have VIns assigned for sure.
These inventory cars can be in transit already and be cancelled orders or something else. Really seems the VIN's don't matter as much as assignment dates, they can be spread out.
Remember though I do not work for Tesla so this could ALL be wrong