A funny semi-related story when my oldest daughter, who is now 40, it's learning to drive I had an 87 Dodge Diplomat with a four-speed that I put in it so she learned to drive in a stick car. Years later after she had gotten married she was moving and had rented a big U-Haul nobody else there, I was 250 miles away, could drive a stick so she drove it and it was the biggest thing truck U-Haul rented. Well she called me up and said dad what am I doing wrong every time I shift gears it grinds the gears. I told her oh you're driving a non-synchronized gearbox. I never taught her how to shift one of those because I never thought to really. I tried to explain how to do it over the phone and she wasn't getting it So eventually I told her is it your truck? She said no and I said do you care about it? And she said no so I told her grind away, lol. Once she got in town and we unloaded her truck I showed her how to drive a non-synchronous gearbox in that U-Haul. Funny thing is is a couple years later she joined the army and became a mechanic it was the only mechanic who could drive a stick