Did John Wayne have an Alfa?. Why right hand steering?
I guess there might have been a serious question here originally. I chuckled as I suggested my previous answer. I must now be a nasty old man who only remembers what some other nasty old man told me years ago. However, if someone must try to give a realistic answer then one probably should start in Roman times when strangers meeting on the open road would raise their right hands to greet oncomers -- thus showing they were unarmed. However, in Latin, the language of the Romans, the word for the adjective of left (as in left hand) was sinister. And because these tricky devils held up their right hands but hid their weapons in the left we now know that sinister people are more than merely left handed. Italian and Spanish and other romantic languages have similarity of word root. Early brake drums were either destro (right) or sinistro (left) on Alfa cars.
Another theory comes from the early days of horses and carriages. Very very few men could handle a whip in their left hands as well as they could with their rights, and the back lash of the whip for the horses would have to curl back behind the drivers seat so it could be flipped forward. Only reasonable that a driver would sit on the right side so his whip could be used unhindered. I have noticed that even now in most (if not all) of the four-in-hand or six-in-hand carriage or wagon demonstrations that the driver sits on the right side so as to be able to use the whip. I confess, however, to having see few of these, and most memorable one involving Prince Phillip, the English Prince Consort (who can really drive a carriage with four or six well). I believe I also recall right hand side drivers in the early western movies involving wagons and stage coaches -- in fact, although John Wayne as "Ringo" started on his trip in the cabin with the "naughty but nice" blond "Dallas", he ended up after the indian attack riding "shotgun" on the left side of "Curly" who was driving the coach in that most famous of Western classics -- Stagecoach.
But I am old and my memory is failing. Let this be a perfectly good excuse to go to Blockbuster Video to check out that fine movie to prove me wrong. It will reacquaint you and those you love with traditional Americana when men were men and women were glad of it. Didn't John Wayne have an Alfa? Or was it Clarke Gable and Carole Lombard who had matching cars. If none did, they should have. Alfa was the prestige car in the world prior to the second world war. Ferrari is a newcomer. Jay