disclaimer: I have no first-hand experience, just second-hand. It should be impossible to leave the factory like this. Let's say the issue is a substandard bat

disclaimer: I have no first-hand experience, just second-hand. It should be impossible to leave the factory like this. Let's say the issue is a substandard batch from a supplier that cracks from stress at some stage of the frame assembly (like when adding the battery pack, welding or adhesive bonding). The car should be inspected after all structural parts are added, at minimum visually but ideally with some kind of spectroscopy. Also, if this is a whole batch with this issue it should have been noticed when doing QC on the shipment. One option is that this happened at some stage during shipping (maybe the car rolled off a trailer and fell half a meter). Still, the dealership should be doing an inspection before handing the car over. All in all, if this really isn't the result of some accident it is a total failure.