Calvin Harris

Pop stars and fast cars: Taylor Swift plays Formula One

With their red, white and blue tutus and Taylor Swift T-shirts, Rachel Emling and Mikala Crews were everything Formula One wanted at the U.S. Grand Prix: young fans who would travel across the country for a mix of pop stars and fast cars.

Tens of thousands packed into the Circuit of the Americas on Saturday night for Swift's only concert of the year at Formula One's only race on American soil.

Formula One's goal in booking Swift was to hook a new generation of fans to their sport in America, long considered an untapped market for the global racing series. Landing fans like Emling and Crews, NASCAR fans from Jacksonville, Florida, was exactly what they hoped for. They came...