My father purchased a car for my 17 year old son to get to and from work and school. My ex has visitation every other weekend, and is telling our son that he is not allowed to bring the car to his home for visitation and he will be providing transportation to and from work. Our son has informed father he will be taking his car and will be at his house for his scheduled parenting time and will not be at my house for pick up. Father is now threatening me with contempt if our son isn’t here for pic