Where is everyone?

As Jon started driving, he started to feel very strange. He looked down and remembered what happened to Karen last night with the wish. His long blonde hair was getting in his face as he was driving and his chest continued to expand. At this rate him being a little more like Karen would mean being Karen by the time he got to her house!
When he got to her house, he was surprised to find no one was there. But he needed to get into his house and looking like he did now, even his own mother would not believe he was Jon. So he parked his car across the street and went into their house. HE walked upstairs to Karen's room and opened the door to get a big surprise!