Why do you automobile engineers keep talking to each other about pistons and transmissions, and all that nonsense, it's absurd. I just want a car that gets me

Why do you automobile engineers keep talking to each other about pistons and transmissions, and all that nonsense, it's absurd. I just want a car that gets me from A to B and doesn't use too much gas. I don't see what that has to do with engine seals.