FoxyCapri - RE:
In Australia, with 6 States and 2 Territories, it would be impossible to get this type of information, due to privacy laws and of course, just the normal bureaucratic BS within these government departments! This type of thing
has been done by someone in an Australian-based Triumph Car Club (Stag owner).
Some states were more receptive than others to the idea of providing limited vehicle details. Some state authorities required FOI type formal requests with the attendant fees to gain this information.
Of the approx 25000 Stags produced by the UK-based manufacturer, the local register has around 1500 entries, with approx 400 having known ownership and identity match. I'm sure there a vehicles on this list that have double entries, which are being resolved.
The person doing this task is currently matching Owner to Vehicle (rego and/or VIN). With information requests to the Australian Triumph clubs with a simple details request form, gathering event photos to seed a register entry, and including the vehicles identified by the state authorities, he has achieved what might seem an impossible goal.
He has been doing this task for approx 12 months.
So it is possible, just takes a lot of legwork and some dealings with officialdom.