By JOAN LOWY 2010-07-01T22:25:24Z WASHINGTON (AP) -- If cars had wings, they could fly - and that just might happen, beginning next year. The company Terrafugia, based in Woburn, Mass., says it plans to deliver its car-plane, the Transition, to customers by the end of 2011. It recently cleared a major hurdle when the Federal Aviation Administration granted a special weight limit exemption to the Transition....