Zyzmog's Fourth Law of Motion

In May 2012, I listed Zyzmog's Three Laws of Motion, and two corollaries to the Second Law of Motion. I have recently discovered a fourth Law of Motion, which is as important - vital, even - as the previous three. The fourth law can be written two different ways. The words are the same, but the word order changes subtly:

Zyzmog's Fourth Law of Motion:

You can only drive your car.

or

Only you can drive your car.

This Law has serious implications that extend beyond the simple act of driving a car, and into the more complicated act of living a life.