"Bruno, trying to change the subject, asks Shmuel if he has any sisters. ... There is an tragic irony in Shmuel's statement that he wants to work with animals in a zoo, because he and the other prisoners are currently being treated like animals—lower than animals, even, as they are killed with impunity."
He. His and Jenny doesn't make sense, him and Jenny doesn't make sense, and we and Jenny doesn't make sense either so it's He and Jenny are going to ride in his car.