FuelPHP Autoloader sub-directories

/**
 * Modules Base Abstract/Driver
 * fuel/app/modules/modules/classes/base/driver.php
 *
 * Provides an abstract/base driver which module information classes must extend
 */
namespace Modules; // This class is located inside the "modules" module directory

abstract class Base_Driver
{
    public function __construct()
    {
        # Ensure that the $title property has been defined in the extending class
        if ( !isset($this->title) )
        {
            // raise error...
        }
    }

    abstract public function install();
    abstract public function uninstall();
}

/**
 * Modules' Module Information Class
 * fuel/app/modules/modules/module.php
 *
 * General module information class
 */
namespace Modules; // This class is located inside the "modules" module directory

class Module extends \Modules\Base_Driver
{
    public

        $title      = 'Modules',
        $url        = 'admin/modules',
        $core       = true,
        $version    = '1.0'

    ;
}

/**
 * Members' Module Information Class
 * fuel/app/modules/members/module.php
 *
 * General module information class
 */
namespace Members;

class Module extends \Modules\Base_Driver
{
    public

        $title      = 'Members',
        $url        = 'admin/members',
        $core       = true,
        $version    = '1.0'

    ;
}