One more theory, the one I subscribe to till this day, was explained to me by the old guy I bought my truck from. He said it came from days gone by when chivalry was more prevalent....."when trucks were trucks and men were men and women were proud of it". He explained that after a hard week on the farm you'might take your wife/girlfriend/date into town for a dinner/movie. You'd exit your driver's side and close your door and your date would reach over to the inside driver door handle and push it forward to lock your door. She would patiently wait in her seat until you came over to open the passenger side door, extend your hand, and help her exit the vehicle. You could then lock the passenger side door with your key. After dinner, you'd open her door, and she'd get in, and you'd then close her door. As you'd walk around to the driver's side, your date would have reached over to your inside door handle and pushed it rearward one detent, unlocking it so that now you could get in from your own side. And that's the way it is.....other theories aside. Just roll with it......
