You shouldn't use other's things what their permission.
Chris is planning to go to the beach with friends this weekend.
Chris wants to make sure he can get there.
Chris cannot get permission to use his father's car, so he asks a friend for a ride.
Chris takes his father car without asking.
A couple of weeks after, his dad trusts him enough to let him use the car on the weekends.
Chris crashes the car and his father makes him pay the damages while banning him from driving until college.