Note that all the great island nations have stayed lefties: the UK, Eire, Japan, Indonesia, Australia, New Zealand ...
....plus most of the former British Empire in Africa, Asia and the Caribbean.
However, today's "Irish Times" reports that Ireland is to switch to driving on the right in 2016/17. In the first year, cars and motor bikes will switch and, the following year, lorries and vans will make the change.