A.R.S. § 28-2263: Withdrawal of vehicle

If a vehicle that is subject to an agreement authorized by this article is permanently withdrawn from a proportionally registered fleet because the vehicle has been destroyed, sold or otherwise completely removed from the registrant's service, the director shall refund the unused portion of the fees paid with respect to the vehicle or apply the fees against the registrant's liability for subsequent additions to the fleet during the registration year or for additional fees on audit.