DETROIT , the birthplace of the mass-production car industry and the Motown sound, has long had an image problem. It boasts a billion-dollar downtown development, ultramodern motor-manufacturing plants, some excellent museums and one of the nation's biggest art galleries. But since the 1960s, media attention has dwelt instead on its huge tracts of urban wasteland, where for block after block there's nothing but the occasional heavily for... [More]