Cadillac have signed IndyCar star Colton Herta as an F1 test driver, with the American switching back to the European single-seater pyramid in the hope of an F1 seat in the future.

Herta, 25, has been linked with an F1 switch for a number of years and there was speculation that American team Cadillac could pick him as a home driver for their debut in the sport next year.

While they instead acquired the services of experienced drivers Valtteri Bottas and Sergio Perez, Herta has now been announced as a test driver, returning to Europe where he previously raced in British F3 as a teenager.

“This is a dream opportunity, and one I’ve been working towards for a long time,” Herta said. “To be part of Cadillac F1’s entry at such a pivotal time is something I couldn’t pass up.

“My dream

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