John Williamson wrote:
Add Japan and most of Africa (Where the drivers don't just stick to
the ruts, which normally match the track of a Land Rover.

Not actually true - see
http://en.wikipedia.org/wiki/Right-_...t-hand_traffic

In Africa, interestingly, some countries which used to drive on the left -
most notably Nigeria - switched to the right because they were surrounded by
other countries which drove on the right. In other parts of Africa, the
opposite happened.

Currently, the split is about 50/50 in terms of the number of
countries which drive on which side.

Not actually true - see
http://en.wikipedia.org/wiki/Right-_...t-hand_traffic

Driving on the left is a minority sport - but not so minority as many people
who drive on the right imagine. Three members of the E.U. drive on the left,
and one other made the switch from left to right within living memory.

André Coutanche