This links directly to the NI Census 2011 file with a break down of car or van availability to households by Small Area (statistical geographies) in Northern Ireland.
1. Car or van availability includes any company car or van when available for private use.
2. 'All cars or vans’ includes only those cars owned by, or available for use by, households. This count is not exact as households with more than 20 cars or vans are counted as having 20 cars or vans.
Source: NI Census 2011, NISRA