Reuters: Brazilian Finance Minister Guido Mantega confirmed on Tuesday that the government will extend tax breaks to certain vehicles deemed environmentally friendly. The government will keep a tax break on flex-fuel cars with up to 1-liter engines until the end of March 2010 and extend tax breaks for trucks until June 2010. Flex-fuel cars can run on any mixture of gasoline and ethanol, which emits fewer greenhouse gases. Taxes on traditional gasoline-run cars will rise from …