Valtteri Bottas crashes into a track barrier during the final practice session for the Japanese Grand Prix. Clive Mason / Getty Images
Valtteri Bottas crashes into a track barrier during the final practice session for the Japanese Grand Prix. Clive Mason / Getty Images
Mercedes' Valtteri Bottas quickest in final Japanese Grand Prix practice before crashing
Finn led teammate and world championship leader Lewis Hamilton, with Ferrari's Sebastian Vettel third.
