class Car(models.Model):
    id = models.UUIDField(primary_key=True, default=uuid.uuid4)
    create_date = models.DateTimeField('date added', auto_now_add=True)
    modify_date = models.DateTimeField('date modified', auto_now=True)
    ...

    def last_tracked_location(self):
        ...
        try:
            url = 'myurl'
            return requests.get(
                url,
            ).json()['location'])
        except:
            return False