The 76-day summer expedition behind Eastern Europe's Iron Curtain took a new twist for globe-trotting foreign correspondents John and Pegge Hlavacek. They loaded four of their five preteen and teenage kids and armloads of cameras and recording equipment into a rented Volkswagen bus... This not-so-typical American family zipped through checkpoints and sped down autobahns and explored back roads, collective farms, and quaint villages in Yugoslavia,...