Use of hook_cron_queue_info

foo.module

<?php

/**
 * Implements hook_Cron_queue_info().
 */
function foo_cron_queue_info() {
  $queues['vehicle_new_queue'] = array(
    'worker callback' => 'vehicle_new_queue_run',
    'time' => 60,
  );
  return $queues;
}

/**
 * Generate queue for vehicle.
 *
 * Implements hook_cron().
 */
function foo_cron() {
  //Generate queue for vehicle new to generate trims on cron run.
  $queue = DrupalQueue::get('vehicle_new_queue');
  $queue->createQueue();
  // Load all vehicle new node
  $nodes = node_load_multiple(array(), array('type' => 'neuf'));
  foreach($nodes as $node) {
    // add each node to queue to process trims later
    $queue->createItem($node);
  }
}

/**
 * Worker callback of queue.
 * @param $data
 *  $data is queue item
 * 
 * @see vehicle_new_trim_cron_queue_info().
 */
function vehicle_new_queue_run($data) {
  // For this functon $data is node object.
}