Financial Times: European carmakers have vowed to oppose a new carbon tax if it were to result in higher prices for diesel oil ndash; complicating policymakers’ efforts to press ahead with the idea. ACEA, the car industry trade group, says a carbon tax could punish European manufacturers, who are world leaders in diesel engine technology, while making it difficult for them to meet binding targets on greenhouse gas emissions. quot;We are against it,quot; said Ivan Hodac, ACEA secretary-general. quot;We need a …