Most people have no concept of how an automatic transmission works, yet they know how to drive a car. You don’t have to study physics to understand the laws of motion to drive a car. You don’t have to understand any of this stuff to use Macintosh.
When I was a kid, the only way I saw movies was from the back seat of my family’s car at the drive-in.
Is fuel efficiency really what we need most desperately? I say that what we really need is a car that can be shot when it breaks down.