page--type.tpl.php

Has anyone succeeded to override page.tpl.php with page-type.tpl.php?
I tryed to add this code to template.php:

        function basic_preprocess_page(&$variables, $hook) {
   // Page template suggestions based off of content types
   if (isset($variables['node'])) { 
                $variables['theme_hook_suggestions'][] = 'page__type__'. $variables['node']->type;
                $variables['theme_hook_suggestions'][] = "page__node__" . $variables['node']->nid;
   }
}       

And also tryed to add if-part only to function basic_preprocess_page(&$vars, $hook) { -which is already in template.php.
I have content type (machine name) cars and added page--cars.tpl.php
But no luck. Also tryed to flush caches.