BERLIN Auto industry jobs have long been the lifeblood of the German town of Luedenscheid but now, a trade union official says, the sector's woes have sparked fears it will turn into an "open-air industrial museum". Insolvencies and layoffs have cast doubt on the town's future prosperity, echoing wider anxieties in Europe's biggest economy as it heads toward February 23 elections . Politicians are scrambling for answers on how to turn around the export-led economy, long the envy of the world,