'There Are Teams That Have Not Shown All Of Their Cards'

Pedro de la Rosa believes some formula one teams are yet to display their true level of competitiveness in pre-season testing -- and Renault could be one of them.The McLaren test driver agrees that the Mercedes-powered team and Ferrari are a step ahead of the rest with their 2008 machines, but thinks winter testing so far has not told the full story about the likely pecking order in 2008.