Our Car (1962)

A photographer decides to buy a car with the money he'll get for his prizewinning photo, but the postman brings only a diploma instead of money. Being subjected to the ridicule of their neighbors, his family decides to buy an used Buick, in spite of being against it at first. That would turn out to be a huge mistake, since the breakdowns are more often that they can afford.

Unfortunately the movie Our Car is not yet available on HBO Max.