This picture is from a trip to Ireland a couple summers ago. A rental car with an automatic transmission was really expensive, so we opted for a manual, which I've driven at least half my life. But this was the first time operating the stick shift left-handed. Add sitting on the right side of the minivan, driving on the left side of the road and some very narrow road, I was more than occasionally a very nervous wreck. I really felt bad for my hopeless passengers.
There are 55 countries that have left-hand traffic, spread all over the world. This link has the complete list.