Closer... closer... wait, too close.

I was riding to work today, along 45th avenue. I could hear a car approaching from behind. I was riding just out of the door-zone.

Just as the car was about to pass me, I put my hand out at what turned out to be mirror-level. So My hand was at most one foot from my body. My hand was smacked by the car's mirror.

Question: Did the car pass me too closely?

This is why I often ride around with a set of keys in my left hand.