BARCELONA, Spain -- Valtteri Bottas admits his winter switch from Williams to Mercedes was "a bigger thing" than he initially expected it to be, though he fully expects it to be a hurdle he can overcome.
Bottas left the team he had spent four years with to replace the retired Nico Rosberg ahead of this campaign. He finished his first week in the team's 2017 challenger, the W08, with the quickest time and most mileage from the opening winter test.
Despite that strong start, Bottas concedes he has been surprise with the scale of the challenge of moving to the world champions.