Auto Zone Ordeal

With Autozone the supply chain is like this
Store ( normal store stock )
Hub Store (usually same day delivery to the store )
Mega Hub Store ( most likely next day delivery to the store )
Distribution Center ( generally once a week delivery to the store for normal store stock items )
Vendor, Special Order Items ( shipped to store VIA FedEx 2 day delivery or freight delivery for large items such as engines )