it seems so ironic this music is playing when Eva is looking for kevin, or just all alone without a family in her station wagon, because this is exactly the all-american type song you play with your whole family in the car while going on a vacation trip . And Eva is hearing this visiting her son in jail. What a terrifying counterpoint, just underlying her absolute misery & loneliness ; like when you try desperately to appear joyful on a merry-go-round in hell.....