He simply walked past the parked car. His elbow brushed the side mirror...
He really didn't even notice. Somewhere in the back of his mind, it registered, but, he was wrapped up in the tangled twine of daily thoughts. It never occurred to him to go back and readjust the thing.
He'd knocked the mirror forward, two inches.
Later, during the morning rush, she didn't see the car coming up on her right, because her mirror was not set properly. In a held breath or two, her car was pushed off of the road and up a grass bank.
She spent her night in the ER, being tested and checked and frowned at with concern by strangers in scrubs. She'd be out of work for a week.
He spent his night watching basketball on TV and eating take-out wings.