Re: Not all need to be recalled.
AC "... not three cars per household on average."
Actually it's YOU that obviously lacks the real world common sense.
Running a household with a teenager and just ONE car uses more fuel than getting him his own car. Chauffeuring him back and forth (drop off) and back and forth (pick up later) is twice the fuel of him driving himself.
If you see a house with three cars parked outside, please notice that they're parked (not moving, not burning fuel). The next house with no car parked outside is because Daddy is out, driving across town to pick up Junior again.
That you don't get this indicates that you're not qualified to offer informed opinions.