Of what relevance to IH is car registrations, in Limerick or anywhere?
There is no direct relevance, however, as newfangled and expensive inventions, the first motor cars were, unsurprisingly, owned by people with money and familiarity with machinery.
Per this Limerick Post article, in Limerick, this happened to be members of the Goodbody family, the Quakers from Clara of milling fame. Another early entry on the list of Limerick motor registrations was Cleeve’s Condensed Milk Factory in Limerick.