class Meta:
        ordering = ('title',)

    def __str__(self):
        return self.title

class Manufactures(models.Model):
    headline = models.CharField(max_length=100)
    publications = models.ManyToManyField(Car)

    class Meta:
        ordering = ('headline',)

 Car.objects.filter(manufactures__headline__startswith="Title").values('title')