I understand, though I can not verify, that when the automobile was first being built 100+ years ago there were two theories as to which side the sterring wheel should be on and it has to do with the complexity of shifting gears, afterall, there was no such thing as an “automatic” transmission. In America the common consensus was that it would be easier for the majority right handed people to steer passively with the left hand while concentrating on shifting with right hand. Of course, the British, who think they know better than we do, contend that steering is the more complicated task which would require the right hand for better control, thus leaving the left hand for the less complicated task of shifting. Now as far as the origin of this story is concerned I cannot verify. It could all be bunk, but it sounds good to me so I subscribe to the idea. However, as far as which side is easier to drive and shift from I draw on my own experience of trying to teach a teenager how to drive a manual transmission while shifting from the passenger seat. If you have ever attempted this, you well know it is very difficult to do, even when assuming the student driver is clutching properly. I can drive with either hand effortlessly but I can only shift with my right hand. As such, I submit that America got it right and driving on the right is the more logical choice, unless of course you are amongst the 10% of the population who happens to be left handed or British.