The race to top the box office chart will go into the final lap this weekend, with Gran Turismo holding a fractional lead over Barbie based on Sunday-morning projections, but everything dependent on which film benefits the most from National Cinema Day. Gran Turismo is doing quite well through the weekend, most likely helped by a much more enthusiastic reception from audiences than it has had from critics; but Barbie is likely to get a really good boost from Sunday’s discounted ticket prices. Right now, the two films are expected to earn $17.3 million and $17.1 million respectively, but final earnings are especially uncertain, and we won’t know until tomorrow who will take the checkered flag.