wheels mounted the wooden blocks, the driver was pinned between the back of the truck and the concrete wall and he was severely injured. Cal-Farm Insurance Company had issued a policy to Brucker, the owner of the truck, and United States Fidelity and Guaranty Company a policy covering Pleasant Valley Lima Bean Growers warehouse operations. In a suit for declaratory relief, Cal-Farm Insurance Company was required to defend, on behalf of plaintiff, Pleasant Valley Lima Bean Growers and its employee, an action for personal injuries brought by the truck driver and to pay, within its policy limits, any judgment for the truck driver; the court held that the defendant's obligations under its policy to Brucker, who owned the truck, were *115 primary to the obligations of United Statesprotected that company for liability arising out of the ownership, maintenance, or use of motor vehicles owned by it. The occupation of Speedy Transport, Inc., the named insured, is described in the policy as "motor carrier for hire," and the insuring agreement in the special endorsement attached to the policy reads: "To pay on behalf of the insured all damages which the insured shall become legally obligated to pay, including contractual obligations for damages which arise out of the occupation of the named insured as stated in the Declarations as a result of personal injury, bodily injury, sickness, disease or death to persons and for loss of or damage to property of others."
 As we have seen, the policy extended coverage by operation of law to anyone using