BMW Sauber's Technical Director, Willy Rampf, revealed in the Swiss publication 'Motorsport Aktuell' that his team will experiment with the new nose hole which was introduced by Ferrari during the Barcelona test session.
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Considering how long all the teams have known about Ferrari's plans (what's it been, 12 weeks since the story broke?), I'm surprised they are only just now putting a model in the wind tunnel!