Or would a better question be, do they have to ship in the current model year or can shipment extend into the following year?
Could new vehicle leave the factory, sit in a parking lot waiting for supplies while being in an "in production" status? Assume that the parts don't arrive until start of 22 or the vehicle never ships in 21 but it does in 22. What would that mean legality wise considering a MY21 was completed in 22, if any?