Toto Wolff says Ferrari’s engine performance has become so strong it is now “almost unbeatable” in Formula 1 qualifying sessions.  Ferrari has claimed the last five pole positions on offer since its resurgence of form since F1’s summer break and can continue its current dominance on a Saturday by making it six on the bounce at this weekend’s Mexican Grand Prix. In contrast, Mercedes has not been fastest in a qualifying session since its home race at the German Grand Prix back in July. Valtteri Bottas ended Friday practice for the Mexican Grand Prix some 0.6s down on pacesetter Sebastian Vettel and admitted the gap to Ferrari was "bigger than expected".  Asked if...
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