You shouldn't let someone underage drive a car.
Ben, who has a large piece of property, has a teenage son who wants to start driving but isn't old enough yet.
Ben wants his son to get experience driving now.
Ben helps his son get his own used dirtbike and has him practice on it.
Ben allows his son to drive his car on the property for practice.
Ben's son crashes the dirtbike several times but quickly learns to handle it.
Ben's son goes too fast, loses control of the car, and hits a tree.