Kobayashi upbeat about Sauber updates

Kamui Kobayashi believes his Sauber team can head to the Spanish Grand Prix with a degree of confidence about its chances on the back of successful upgrades tried out at Mugello this week. The Hinwil-based team has had mixed fortunes in the first four races of the season, but Kobayashi thinks the team can deliver on its full potential at the Circuit de Catalunya. "At the Mugello test I definitely had the feeling our new update to the car is a step forward for us," said the Japanese

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