There was this Battlewagon.
A Battlewagon is a catch-all term used for any type of Ork assault tank and heavy armoured troop transport.
Here is another similar Battlewagon.
The term Battlewagon seems to refer overall to a category of large Ork armoured vehicles. A Battlewagon can be wheeled, tracked or a combination of the two and is used in many battlefield roles. It always carries a large complement of weapons.
See the Battlewagon Miniatures Gallery.