from django.db import models

class Car(models.Model):

    name = models.CharField(max_length=100)

class Person(models.Model):

    name = models.CharField(max_length=100)

    cars = models.ManyToManyField(Car, through="PossessedCar")

    data = models.BinaryField(null=True)

class PossessedCar(models.Model):

    car = models.ForeignKey(Car, models.CASCADE)

    belongs_to = models.ForeignKey(

        Person, models.CASCADE, related_name="possessed_cars"

    )