Washington Post: Washington’s wordsmiths are at it again. A new federal program seems to have changed the very definition of the word “clunker.” A vote, a stroke of the pen, a desire to get Americans buying cars and a mandate to shrink greenhouse gas emissions have turned a fleet of old Audis, BMWs, Acuras and other luxury cars into clunkers overnight. The Consumer Assistance to Recycle and Save Act of 2009 — also known as “Cash for Clunkers” — will offer vouchers of up to $4,500 for car …