In a sport where winning margins are in the seconds, Formula One drivers try to keep their cars as light as possible to get to their maximum speeds. For Susie Wolff, that includes the driver.

When the 32-year-old Ms. Wolff stepped into her race car last summer at the British Grand Prix, it marked the first time in 22 years since a woman had driven at a F1 Grand Prix. Her appearance was cut short after about 20 minutes due to engine troubles, but it was still a childhood dream come true.

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