The airplane was in level cruise flight, about 2,300 feet above ground level (agl), when both engines had a simultaneous complete loss of power. The pilot reported he was unable to restart either engine and established a glide for an emergency off field landing on a county road. The airplane impacted flat terrain in thick mesquite bushes about 150 feet short of the intended landing spot and sustained substantial damage to the fuselage and both wings. The pilot reported that he had failed to notice the fuel selector for the right engine was in the “cross feed” position and that both engines were using fuel from the left fuel tank until the fuel in the left tank was depleted. Approximately 35 gallons of fuel were found in the right fuel tank after the accident.