Since buying a car, his children have always come to borrow it. What should I do?

Borrowing a car is not a single problem of borrowing a car. Many subsequent problems, such as deducting points and fines for violations, are still trivial. If you encounter special events, it's not so easy to say, and it's even harder to deal with your situation. For your happiness, let your husband talk about his baby, and don't mention borrowing the car again.