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Ericsson drove for Brawn GP at the young driver test at Circuito de Jerez over three days, on 1–3 December 2009. He tested alongside IndyCar Series driver Mike Conway. Conway had the edge by three-tenths of a second, however team principal Ross Brawn commended Ericsson for his performance, saying that he had "performed very well showing exceptional maturity in his approach and feedback".