Driving Miss Sophia

Ms. Amy is letting Sophia borrow Dusty's car for a while. Sophia loves it. She has been out on it twice. The first time she had one hand on the wheel and the other on the side of the car, just relaxing. The next day she had both hands on the wheel but would use one hand to wave at the neighbors or to beep her horn. How do they know to put their hands on the wheel? It is a mystery to me. She sits in the car with her back to us but yet she knows just what to do. So weird. But man, does she have fun. Thanks Dusty and Amy!!