Times (UK): Alistair Darling will increase petrol duty and impose swingeing penalties on high-emission cars this week in what ministers will call "the green Budget". He will give tax incentives to companies who opt for greener vehicle fleets. And in a further move to show his green credentials Mr Darling will announce that Britain’s first five-year carbon budget, setting out the way independent experts believe that the country should meet the target of reducing emissions by 60 per cent by 2050, …