Originally Posted by After Shock Media

Thanks for lesson and I do know he was not the first, did not say it in my post either.
I give ford credit for the assembly line and the BBQ briquette. His car was also the most sold and most popular. He gets credit for getting peoples asses in the seat and using them. Therefore he gets to write the guide and operational manual for them - which can dictate what side of the road to drive on.

Yeah reality is we had side walks and people used horses a lot still. The middle of the roads often were muddy and covered in horse crap. Nobody wanted to get out in horse shit and people who had cars had drivers. So you drive on a given side so your passengers can get in and out without getting horse shit and mud on you. At least I think that is why.