Hi guys,

I would like to inherit the model 'account.analytic.account' but when I do so I get the following error:

TypeError: The model "account.analytic.account" specifies an unexisting parent class "fleet.vehicle"
You may need to add a dependency on the parent class' module. 

 # -*- coding: utf-8 -*-
import controllers
import models

__openerp__.py

 # -*- coding: utf-8 -*-
{
    'name': "aa_auto_maatwerk",

    'summary': """Extending fleet""",

    'description': """
        Extending some features """,

    'author': "Your Company",
    'website': "http://www.yourcompany.com",
    'category': 'Uncategorized',
    'version': '0.1',

    # any module necessary for this one to work correctly
    'depends': ['base', 'fleet', 'analytic'],

    # always loaded
    'data': [
        # 'security/ir.model.access.csv',
        'templates.xml',
    ],
    # only loaded in demonstration mode
    'demo': [
        'demo.xml',
    ],
}

models.py:

 # -*- coding: utf-8 -*-

from openerp.osv import osv, fields, orm

class aa_auto_maatwerk(orm.Model):
    _name = 'account.analytic.account'
    _inherit = ['account.analytic.account']
    _columns = {
        'car_ids': fields.many2many('fleet.vehicle', 'fleet_to_contract', 'car_id1', 'car_id2', 'Cars'),
    }

Why am I getting this and what is wrong with this? The model exists in the database. I want this to lay a link to car.vehicle with a one2many.