>Sorry just a poke at the Brits. Here is why people drive on the right (and left) sides of the road.
>http://www.tisltd.co.uk/left.htm

Here is another, which includes the walking side, some conversion from left to right, trains, the chunnel.
http://www.travel-library.com/general/driving/drive_which_side.html

My wife had no idea that (in Canada) you are supposed to walk to the right of the sidewalk. In some counties, like England, there isn't a preference for the side of the sidewalk.