(The previous addition follows, but this is readjusted to imply John's realization of Sarah's change took place in the Car, as he hastily rushed in without looking at her)
John's mouth gaped open as he saw the obviously changed Sarah, already infected and on her way to becoming, whatever it was that this thing was doing to her. He told her to park the car, of which she did reluctantly.
"John, where are you going? Come on, enough of this! You're scaring me Johnny."
John slammed the door and started running the other direction towards a park, and planned on hiding into some woods. "The real Sarah would never call me 'Johnny, you're one of them! Shoo!" And with that he ran as she shrugged and drove off oblivious.
"I sure hope he's okay. I won't tell his parents, but he really should get himself checked out." Sarah said, as she combed her hair into a bobbish style with her two bangs perfectly split down the middle like an arch. "There, perfect hair makes a perfect friend! And who doesn't like friends!"
With a giggle, she drove off into the night.
