Lewis Hamilton questions F1’s new regulations before first test session

On the eve of tests in Barcelona the three-times world champion believes overtaking will be worse and drivers will face more powerful and turbulent dirty airReading anything into Formula One’s first testing session is a dangerous game – unless a radical interpretation of the rules has bestowed an obvious advantage, such as Jenson Button’s Brawn team enjoyed in 2009 – but there is one thing that may become clear in Barcelona on Monday, and it could be crucial to the succes