It would be unique because Sweden are attached to a continent where everyone drives on the other side of the road. The other left hand sided driving countries

It would be unique because Sweden are attached to a continent where everyone drives on the other side of the road. The other left hand sided driving countries are normally either in clusters together or are isolated by water and so don't have cars crossing the border. Interestingly in the far east of Russia they get a lot of cars imported from Japan so the steering wheel is on the right hand side so they have the opposite problem.