Motor vehicle on walking tracks
Generally, you cannot use motor vehicles on tracks. Even where access with vehicles is legally allowed, such as on an unformed legal road, it is a courtesy to inform the landholder, especially where the access crosses unfenced farmland. Vehicles should keep to formed tracks, where access is allowed.
Many unformed legal roads are unsuitable for the use of motor vehicles.
Note that it is an offence to damage the surface of a road – this can include the turf of a paddock.