It’s lights out and away we go at the box office as “F1,” a big-budget racing drama starring Brad Pitt, impressively revs to $55.6 million in its domestic opening weekend. With great reviews and a promising “A” grade on CinemaScore exit polls, “F1” landed in the middle of expectations of $50 million to $60 million. At the international box office, the film collected a strong $88.4 million from 78 markets. Those initial ticket sales are significant given “F1” is an adult-skewing tentpole that’s not part of an existing film franchise — a rarity in today’s I.P.-dominated movie theater landscape. Directed...