You don't need that if you have proper inventory control....
This is especially true in countries where the cars are delivered by container ship. You can easily make headlines about "Tesla has record sales in <month>" and "Tesla has poor sales in <month>" based on which months the ships arrive and the cars are delivered to customers.
I'm not sure what about this indicates that they don't have inventory control.
This is often due to the bulk deliveries at end of quarter and only really having 1 model "per line" vs other manufacturers splitting their car lines into several variants.