Former Formula 1 world champion Mika Hakkinen says that Ferrari must find a way to solve the mounting tension within the team if it is to finally beat the rival Mercedes squad in 2020. The last two races have seen growing friction between drivers Charles Leclerc and Sebastian Vettel won in Singapore after the team used the 'undercut' pit stop strategy to put him ahead of Leclerc. In Sochi Vettel appeared to be reluctant to undertake a previously agreed swap between the two cars after a tow from Leclerc helped him take the lead at the start of the race. However the disagreement became irrelevant when Vettel suffered a subsequent technical failure on his SF90. Brawn: Leclerc/Vettel rivalry...
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