Is this true? There is, or was a street in Brazil, possibly Sao Paulo, where the rule of the road was to drive down it on the left rather than the usual right hand side.
When I lived in Zambia I had to drive through a small area of Zaire called the 'Pedicle' to get to another province in Zambia. Zambia drives on the left as we do in the UK, Zaire drives on the right. As you cross the border you change sides of the road and then back again on the other side to get back into Zambia, quite an 'interesting' experience, especially as the 'road' is only a dirt track anyway.