Formula One World Championship: Marcus Ericsson (SWE) Sauber walks the track at Formula One World Championship, Rd4, Russian Grand Prix, Preparations, Sochi Autodrom, Sochi, Krasnodar Krai, Russia, Thursday 28 April 2016.
Marcus Ericsson (SWE) Sauber walks the track at Formula One World Championship, Rd4, Russian Grand Prix, Preparations, Sochi Autodrom, Sochi, Krasnodar Krai, Russia, Thursday 28 April 2016.