I sold my car this morning

I just got up this morning and started to play my Nintendo switch. I seen someone walk up to my door and knocked on it. He was curious about my car and if it ran. I was like yes it does run I drove it last June to Tennessee. We went outside and I hook up the battery to it and it started instantly. He told me his son is about to turn 16 and he wanted a good little car for his first. He ask me if I would sell it to him. I was like I don't need any money for it. He still offered me a thousand dollars for the car.