Reuters: Car makers are lobbying the European Union to delay an agreed 2011 ban on climate-damaging chemicals in car air conditioners, a letter from auto industry group ACEA shows. The move has aroused strong opposition from environmentalists and suppliers of greener engineering systems. The European Union ruled in 2006 that from 2011 it would ban the use of fluorinated chemicals, such as the industry standard known as R134a, which have a powerful climate-warming effect when released …