Mercedes boss Toto Wolff admits that the return of refuelling could be abandoned if it is thought it will drive up costs. Speaking in the wake of the revelation that, in an attempt to spice up the sport, F1's Strategy Group has recommended the return of refuelling in 2017, Wolff admitted that the move is not (sorry, Mr Miliband) set in stone. 'We discussed many topics,' he told BBC Sport. 'Refuelling was banned because of cost and because the pit stops were taking too long. But we want to re-explore it and see if we can make pit stops for fuel and tyres happen in the same time it takes to change the tyres now... two to three seconds. 'We have agreed to explore this avenue and the cost...
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