The film is beautifully shot in black and white. Just a pleasure to watch in that regard. In terms of the basic premise, you have a Polish married couple in a private vehicle. It's a nice car, but they're squished together on the car's front bench seat. Shoulder touching shoulder, without any extra room. It's not meant to be a small compact car, but you're definitely not going to fit a more than 4 people in this car. The hitchhiker is younger. Maybe he's supposed to be half the age of the couple. Why does he walk around and hitchhike? Boredom, perhaps, although maybe the couple is bored, too. If you're rich and bored, you go out boating. If you're poor and bored, you go out hitchhiking. For whatever reason, the man decides to let the younger man ride with them. Then, he invites him to join their one-day cruise. Why? Even his wife will eventually ask him why. Is the older man "showing off"? Does he want to make the young man jealous of his life ...
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