Bit of an odd question maybe, but it's been bothering me for a while, and having just returned from France, where they drive on the right, my curiosity is renewed. Even if I can't spell curiousity (one of those has to be right!). We here in Ireland drive on the left side of the road. As far as I know (could be wrong here), so do Britain, Australia and Japan. I don't know of any others. Does anybody know if there's a reason for this, or is it just random chance? The only link I can find between the countries that drive on the left is that they're all island nations, whether this has anything to do with anything else I don't know. Any ideas?